View source for Biography:Humphry Davy

{{Short description|British chemist and inventor (1778–1829)}}
{{Infobox scientist
| honorific_prefix  = Sir
| name              = Humphry Davy
| honorific_suffix  = {{post-nominals|country=GBR|Bt|FRS|MRIA|FGS|size=100%}}
| image             = Sir Humphry Davy, Bt by Thomas Phillips.jpg
| caption           = Portrait by Thomas Phillips, 1821
| birth_date        = {{birth date|df=yes|1778|12|17}}
| birth_place       = Penzance, Cornwall, England
| death_date        = {{death date and age|df=yes|1829|5|29|1778|12|17}}
| death_place       = [[Place:Geneva|Geneva]], Switzerland
| signature         = Davy's signature.png
| field             = [[Chemistry:Chemistry|Chemistry]]
| work_institutions = {{ubl|Royal Society|Royal Institution}}
| alma_mater        =
| academic_advisors = 
| known_for         = {{cslist|[[Chemistry:Electrolysis|Electrolysis]]|aluminium|[[Chemistry:Sodium|sodium]]|[[Chemistry:Potassium|potassium]]|[[Chemistry:Calcium|calcium]]|
[[Chemistry:Strontium|strontium]]|[[Chemistry:Magnesium|magnesium]]|[[Chemistry:Barium|barium]]|[[Chemistry:Boron|boron]]|Davy lamp}}
| awards            = {{ubl|[[Physics:Copley Medal|Copley Medal]] (1805)|Prix du galvanisme (1807)|Rumford Medal (1816)|Royal Medal (1827)}}
| module            = {{Infobox officeholder| embed = yes
|order1 = 23rd
|office1 = President of the Royal Society
|predecessor1 = [[Biography:William Hyde Wollaston|William Hyde Wollaston]]
|successor1 = Davies Gilbert
|term_start1 = 1820
|term_end1 = 1827
}} 
}}
{{electromagnetism|Scientists}}

'''Sir Humphry Davy, 1st Baronet''', {{post-nominals|country=GBR|size=100%|sep=,|FRS|MRIA|FGS}} (17 December 1778{{spaced ndash}}29 May 1829) was a British [[Chemist|chemist]] and inventor who invented the Davy lamp and a very early form of [[Physics:Arc lamp|arc lamp]]. He is also remembered for isolating, by using electricity, several [[Chemistry:Chemical element|elements]] for the first time: [[Chemistry:Potassium|potassium]] and [[Chemistry:Sodium|sodium]]<ref name="ODNB" /> in 1807 and [[Chemistry:Calcium|calcium]], [[Chemistry:Strontium|strontium]], [[Chemistry:Barium|barium]], [[Chemistry:Magnesium|magnesium]] and [[Chemistry:Boron|boron]] the following year, as well as for discovering the elemental nature of [[Chemistry:Chlorine|chlorine]] and [[Chemistry:Iodine|iodine]]. Davy also studied the forces involved in these separations, inventing the new field of [[Chemistry:Electrochemistry|electrochemistry]]. Davy is also credited to have been the first to discover [[Physics:Clathrate hydrate|clathrate hydrate]]s in his lab.

In 1799 he experimented with [[Chemistry:Nitrous oxide|nitrous oxide]] and was astonished at how it made him laugh, so he nicknamed it "laughing gas" and wrote about its potential [[Medicine:Anesthesia|anaesthetic]] properties in relieving pain during surgery.<ref>{{cite book|last1=Hardman|first1=Jonathan G.|title=Oxford Textbook of Anaesthesia|date=2017|publisher=Oxford University Press|page=529}}</ref>

Davy was a baronet, President of the Royal Society (PRS), Member of the Royal Irish Academy (MRIA), Fellow of the Geological Society (FGS), and a member of the American Philosophical Society (elected 1810).<ref>{{Cite web|title=APS Member History|url=https://search.amphilsoc.org/memhist/search?creator=John+Haighton&title=&subject=&subdiv=&mem=&year=&year-max=&dead=&keyword=&smode=advanced|access-date=2 April 2021|website=search.amphilsoc.org}}</ref> [[Biography:Jöns Jacob Berzelius|Berzelius]] called Davy's 1806 Bakerian Lecture ''On Some Chemical Agencies of Electricity''<ref name="Davy, 1806">{{cite web |url=http://www.english.upenn.edu/Projects/knarf/Davy/davy5.html |title=On Some Chemical Agencies of Electricity |archive-url=https://web.archive.org/web/20071026154758/http://www.english.upenn.edu/Projects/knarf/Davy/davy5.html <!-- Bot retrieved archive --> |archive-date=26 October 2007 |access-date=2 March 2008}}</ref> "one of the best memoirs which has ever enriched the theory of chemistry."<ref name="Berzelius, 1818">{{cite book|title=Traité de chimie|last=Berzelius|first=J. J.|author2=trans. A. Jourdan and M. Esslinger|edition=trans., of experimental science|volume=1|page=169|language=fr|}}</ref>

== Early life: 1778–1798 ==
===Education, apprenticeship and poetry===
Davy was born in Penzance, [[History:Cornwall|Cornwall]], in the [[Place:Kingdom of Great Britain|Kingdom of Great Britain]] on 17 December 1778, the eldest of the five children of Robert Davy, a woodcarver, and his wife Grace Millett.<ref name="ODNB" /> According to his brother and fellow chemist John Davy, their hometown was characterised by "an almost unbounded credulity respecting the supernatural and monstrous ... Amongst the middle and higher classes, there was little taste for literature, and still less for science ... Hunting, shooting, wrestling, cockfighting, generally ending in drunkenness, were what they most delighted in."<ref name="Davy 1836">{{cite book |last = Davy |first= John |title = Memoirs of the Life of Sir Humphry Davy |volume = 1 |url = https://books.google.com/books?id=EOQ5AAAAcAAJ |location = London |publisher = Longman, Rees, Orme, Brown, Green, & Longman |year = 1836|isbn= 9780608378510 }}</ref>

At the age of six, Davy was sent to the grammar school at Penzance. Three years later, his family moved to Varfell, near Ludgvan, and subsequently, in term-time Davy boarded with John Tonkin, his godfather and later his guardian.<ref name="ODNB"/> Upon Davy's leaving grammar school in 1793, Tonkin paid for him to attend Truro Grammar School to finish his education under the Rev Dr Cardew, who, in a letter to Davies Gilbert, said dryly, "I could not discern the faculties by which he was afterwards so much distinguished." Davy entertained his school friends by writing poetry, composing Valentines, and telling stories from ''[[Religion:One Thousand and One Nights|One Thousand and One Nights]]''. Reflecting on his school days in a letter to his mother, Davy wrote, "Learning naturally is a true pleasure; how unfortunate then it is that in most schools it is made a pain."<ref>{{cite book |last = Knight |first = David |title = Humphry Davy: Science and Power |location = Cambridge |publisher = Cambridge University Press |year = 1992 |isbn = 978-0-631-16816-4 |url = https://archive.org/details/isbn_9780631168164 }}</ref> "I consider it fortunate", he continued, "I was left much to myself as a child, and put upon no particular plan of study ... What I am I made myself."<ref name=DNB>{{cite DNB |last=Hunt |first=Robert |author-link=Robert Hunt (scientist) |wstitle=Davy, Humphry |year=1888}}</ref> His brother said Davy possessed a "native vigour" and "the genuine quality of genius, or of that power of intellect which exalts its possessor above the crowd."<ref name="Davy 1836"/>

After Davy's father died in 1794, Tonkin apprenticed him to John Bingham Borlase, a surgeon with a practice in Penzance. While becoming a chemist in the apothecary's dispensary, he began conducting his earliest experiments at home, much to the annoyance of his friends and family. His older sister, for instance, complained his corrosive substances were destroying her dresses, and at least one friend thought it likely the "incorrigible" Davy would eventually "blow us all into the air."<ref name=DNB />

In 1797, after he learnt French from a refuge priest, Davy read Lavoisier's ''Traité élémentaire de chimie.'' This exposure influenced much of his future work, which can be seen as reaction against Lavoisier's work and the dominance of French chemists.

As a poet, over one hundred and sixty manuscript poems were written by Davy, the majority of which are found in his personal notebooks. Most of his written poems were not published, and he chose instead to share a few of them with his friends. Eight of his known poems were published. His poems reflected his views on both his career and also his perception of certain aspects of human life. He wrote on human endeavours and aspects of life like death, metaphysics, geology, natural theology and chemistry.<ref name="auto">{{cite book
 |last = Amin |first= Wahida
 |title = The Poetry and Science of Humphry Davy.
 |url = http://usir.salford.ac.uk/30795/1/Wahida_Amin_-_The_Poetry_and_Science_of_Humphry_Davy_-_23.01.14.pdf
 |type = Unpublished PhD thesis, University of Salford, UK |year = 2013}}</ref>

John Ayrton Paris remarked that poems written by the young Davy "bear the stamp of lofty genius". Davy's first preserved poem entitled "The Sons of Genius" is dated 1795 and marked by the usual immaturity{{According to whom|date=April 2021}} of youth. Other poems written in the following years, especially "On the Mount's Bay" and "St Michael's Mount", are descriptive verses.

Three of Davy's paintings from around 1796 have been donated to the Penlee House museum at Penzance. One is of the view from above Gulval showing the church, Mount's Bay and the Mount, while the other two depict Loch Lomond in Scotland.<ref>{{cite news|last=Anon|title=Davy paintings donated to museum|newspaper=The Cornishman|date=22 September 2011}}</ref><ref>Davy's picture of Mounts Bay was included in the Penlee House exhibition "Penzance 400: A Celebration of the History of Penzance", 29 March – 7 June 2014</ref>

At 17, he discussed the question of the materiality of heat with his Quaker friend and mentor Robert Dunkin. Dunkin remarked: 'I tell thee what, Humphry, thou art the most quibbling hand at a dispute I ever met with in my life.' One winter day he took Davy to the Larigan River,<ref>The Larigan, or Laregan, river is a stream in Penzance.</ref> To show him that rubbing two plates of ice together developed sufficient energy by motion to melt them, and that after the motion was suspended, the pieces were united by regelation. It was a crude form of analogous experiment exhibited by Davy in the lecture-room of the Royal Institution that elicited considerable attention.<ref name=DNB /> As professor at the Royal Institution, Davy repeated many of the ingenious experiments he learnt from Dunkin.

Although he initially started writing his poems, albeit haphazardly, as a reflection of his views on his career and on life generally, most of his final poems concentrated on immortality and death. This was after he started experiencing failing health and a decline both in health and career.<ref name="auto"/>

== Early career: 1798–1802==
{{further|Physics:Arc lamp}}

===Scientific interests===
Davies Giddy met Davy in Penzance carelessly swinging on the half-gate of Dr Borlase's house, and interested by his talk invited him to his house at Tredrea and offered him the use of his library. This led to his introduction to Dr Edwards, who lived at Hayle Copper House. Edwards was a lecturer in chemistry in the school of St. Bartholomew's Hospital. He permitted Davy to use his laboratory and possibly directed his attention to the floodgates of the port of Hayle, which were rapidly decaying as a result of the contact between copper and iron under the influence of [[Earth:Seawater|seawater]]. [[Chemistry:Galvanic corrosion|Galvanic corrosion]] was not understood at that time, but the phenomenon prepared Davy's mind for subsequent experiments on ships' [[Chemistry:Copper sheathing|copper sheathing]]. Gregory Watt, son of James Watt, visited Penzance for his health's sake, and while lodging at the Davys' house became a friend and gave him instructions in chemistry. Davy was acquainted with the [[Company:Wedgwood|Wedgwood]] family, who spent a winter at Penzance.<ref name=DNB />

Thomas Beddoes and John Hailstone were engaged in a geological controversy on the rival merits of the [[Earth:Plutonism|Plutonian]] and Neptunist hypotheses. They travelled together to examine the Cornish coast accompanied by Davies Gilbert and made Davy's acquaintance. Beddoes, who had established at Bristol a 'Pneumatic Institution,' needed an assistant to superintend the laboratory. Gilbert recommended Davy, and in 1798 Gregory Watt showed Beddoes the ''Young man's Researches on Heat and Light'', which were subsequently published by him in the first volume of ''West-Country Contributions''. After prolonged negotiations, mainly by Gilbert, Mrs Davy and Borlase consented to Davy's departure, but Tonkin wished him to remain in his native town as a surgeon, and altered his will when he found that Davy insisted on going to Dr Beddoes.

In 1802, Humphry Davy had what was then the most powerful electrical battery in the world at the Royal Institution. With it, Davy created the first incandescent light by passing electric current through a thin strip of platinum, chosen because the metal had an extremely high melting point. It was neither sufficiently bright nor long lasting enough to be of practical use, but demonstrated the principle. By 1806 he was able to demonstrate a much more powerful form of electric lighting to the Royal Society in London. It was an early form of [[Physics:Arc lamp|arc light]] which produced its illumination from an electric arc created between two charcoal rods.

===Pneumatic Institution===
[[File:Watt James von Breda.jpg|thumb|upright|James Watt in 1792 by Carl Frederik von Breda]]
On 2 October 1798, Davy joined the Pneumatic Institution at Bristol. It had been established to investigate the medical powers of [[Physics:Factitious airs|factitious airs]] and gases (gases produced experimentally or artificially), and Davy was to superintend the various experiments. The arrangement agreed between Dr Beddoes and Davy was generous, and enabled Davy to give up all claims on his paternal property in favour of his mother. He did not intend to abandon the medical profession and was determined to study and graduate at Edinburgh, but he soon began to fill parts of the institution with voltaic batteries. While living in Bristol, Davy met the Earl of Durham, who was a resident in the institution for his health, and became close friends with Gregory Watt, James Watt, [[Biography:Samuel Taylor Coleridge|Samuel Taylor Coleridge]] and Robert Southey, all of whom became regular users of [[Chemistry:Nitrous oxide|nitrous oxide]] (laughing gas). The gas was first synthesised in 1772 by the natural philosopher and chemist [[Biography:Joseph Priestley|Joseph Priestley]], who called it ''dephlogisticated nitrous air'' (see phlogiston).<ref name="Nitrous Oxide pioneers" >{{cite web
  |url=http://journals.lww.com/anesthesiology/citation/1941/09000/The_Development_of_Anesthesia.8.aspx
  |author=Keys TE
  |title=The Development of Anesthesia
  |work=Anesthesiology journal (Sep. 1941, vol. 2, is. 5, pp. 552–74)
  |year=1941
  |access-date=24 June 2010
  |archive-date=12 January 2014
  |archive-url=https://web.archive.org/web/20140112122739/http://journals.lww.com/anesthesiology/citation/1941/09000/The_Development_of_Anesthesia.8.aspx
  |url-status=dead
  }}</ref> Priestley described his discovery in the book ''Experiments and Observations on Different Kinds of Air (1775)'', in which he described how to produce the preparation of "nitrous air diminished", by heating iron filings dampened with [[Chemistry:Nitric acid|nitric acid]].<ref name="Joseph Priestley" >{{cite book
  |url=http://www.erowid.org/chemicals/nitrous/nitrous_journal1.shtml
  |author=Priestley J
  |title=Experiments and Observations on Different Kinds of Air |volume=2 |at=sec. 3
|via=Erowid.org
  |year=1776
}}</ref>
[[File:Anaesthesia exhibition, 1946 Wellcome M0009908.jpg|thumb|left|Sir Humphry Davy's ''Researches chemical and philosophical: chiefly concerning nitrous oxide'' (1800), pp. 556 and 557 (right), outlining potential anaesthetic properties of nitrous oxide in relieving pain during surgery]]
James Watt built a portable gas chamber to facilitate Davy's experiments with the inhalation of nitrous oxide. At one point the gas  was combined with wine to judge its efficacy as a cure for hangover (his laboratory notebook indicated success). The gas was popular among Davy's friends and acquaintances, and he noted that it might be useful for performing surgical operations.<ref>In his 1800 ''Researches, Chemical and Philosophical'' (p. 556), Davy commented: "''As nitrous oxide in its extensive operation appears capable of destroying pain, it may probably be used with advantage during surgical operations in which no great effusion of blood takes place.''"</ref> Anesthetics were not regularly used in medicine or dentistry until decades after Davy's death.<ref name="AOW" >{{cite book|last=Holmes |first=Richard|title=The Age of Wonder|publisher=Pantheon Books  |year=2008  |isbn=978-0-375-42222-5  |ref=Holmes, 2008, AOW}}</ref>

Davy threw himself energetically into the work of the laboratory and formed a long romantic friendship with Mrs Anna Beddoes, the novelist Maria Edgeworth's sister, who acted as his guide on walks and other fine sights of the locality. The critic Maurice Hindle was the first to reveal that Davy and Anna had written poems for each other.<ref>{{cite web|last1=Hindle|first1=Maurice|title=Nature, Power, and the Light of Suns: The Poetry of Humphry Davy|url=http://mauricehindle.com/wp-content/uploads/2016/04/Nature-Power-the-Light-of-Suns-essay.pdf|access-date=4 May 2017}}</ref> Wahida Amin has transcribed and discussed a number of poems written between 1803 and 1808 to "Anna" and one to her infant child.<ref>{{cite web|last1=Amin|first1=Wahida|title=The Poetry and Science of Humphry Davy|url=http://usir.salford.ac.uk/30795/1/Wahida_Amin_-_The_Poetry_and_Science_of_Humphry_Davy_-_23.01.14.pdf|access-date=4 May 2017}}</ref> In December 1799 Davy visited London for the first time and extended his circle of friends. Davy features in the diary of William Godwin, with their first meeting recorded for 4 December 1799.<ref>{{cite web|last1=Godwin|first1=William|title=William Godwin's Diary|url=http://godwindiary.bodleian.ox.ac.uk/people/DAV03.html|access-date=4 May 2017}}</ref>

In the gas experiments Davy ran considerable risks. His respiration of [[Chemistry:Nitric oxide|nitric oxide]] which may have combined with air in the mouth to form [[Chemistry:Nitric acid|nitric acid]] (HNO<sub>3</sub>),<ref name="Jay2014" /> severely injured the mucous membrane, and in Davy's attempt to inhale four quarts of "pure [[Physics:Factitious airs|hydrocarbonate]]" gas in an experiment with [[Chemistry:Carbon monoxide|carbon monoxide]] he "seemed sinking into annihilation." On being removed into the open air, Davy faintly articulated, "I do not think I shall die,"<ref name="Jay2014" /> but some hours elapsed before the painful symptoms ceased.<ref name="DNB" /> Davy was able to take his own pulse as he staggered out of the laboratory and into the garden, and he described it in his notes as "threadlike and beating with excessive quickness".

In this year the first volume of the ''West-Country Collections'' was issued. Half consisted of Davy's essays ''On Heat, Light, and the Combinations of Light'', ''On Phos-oxygen and its Combinations'', and on the ''Theory of Respiration''. On 22 February 1799 Davy, wrote to Davies Gilbert, "I am now as much convinced of the non-existence of [[Physics:Caloric theory|caloric]] as I am of the existence of light." In another letter to Gilbert, on 10 April, Davy informs him: "I made a discovery yesterday which proves how necessary it is to repeat experiments. The gaseous oxide of azote (the laughing gas) is perfectly respirable when pure. It is never deleterious but when it contains nitrous gas. I have found a mode of making it pure." He said that he breathed sixteen quarts of it for nearly seven minutes, and that it "absolutely intoxicated me."<ref name=DNB /> 
Davy became increasingly well known in 1799 due to his experiments with the physiological action of some gases, including laughing gas (nitrous oxide). In addition to himself, his enthusiastic experimental subjects included his poet friends Robert Southey and [[Biography:Samuel Taylor Coleridge|Samuel Taylor Coleridge]].<ref name="Jay2014">{{cite journal |last1=Jay |first1=Mike |title='O, Excellent Air Bag'p: Humphry Davy and Nitrous Oxide |journal= [[Social:The Public Domain Review|The Public Domain Review]]|date=8 August 2014 |volume=4 |issue=16 |url=http://publicdomainreview.org/2014/08/06/o-excellent-air-bag-humphry-davy-and-nitrous-oxide/ |publisher=[[Organization:Open Knowledge Foundation|Open Knowledge Foundation]]}} {{Open access}}</ref><ref name="Roberts">{{cite journal|last1=Roberts|first1=Jacob|title=High Times|journal=Distillations |date=2017|volume=2|issue=4|pages=36–39|url=https://www.sciencehistory.org/distillations/magazine/high-times|access-date=22 March 2018}}</ref>

During 1799, Beddoes and Davy published ''Contributions to physical and medical knowledge, principally from the west of England'' and ''Essays on heat, light, and the combinations of light, with a new theory of respiration. On the generation of oxygen gas, and the causes of the colors of organic beings.'' Their experimental work was poor, and the publications were harshly criticised.<ref name="Kenyon"/> In after years Davy regretted he had ever published these immature hypotheses, which he subsequently designated "the dreams of misemployed genius which the light of experiment and observation has never conducted to truth."<ref name=DNB />

These criticisms, however, led Davy to refine and improve his experimental techniques,<ref name="Kenyon"/> spending his later time at the institution increasingly in experimentation.
In 1800, Davy informed Gilbert that he had been "repeating the galvanic experiments with success" in the intervals of the experiments on the gases, which "almost incessantly occupied him from January to April." In 1800, Davy published his ''Researches, Chemical and Philosophical, chiefly concerning Nitrous Oxide and its Respiration'', and received a more positive response.<ref name="Kenyon"/>

[[Biography:William Wordsworth|William Wordsworth]] and Samuel Taylor Coleridge moved to the Lake District in 1800, and asked Davy to deal with the Bristol publishers of the ''Lyrical Ballads'', Biggs & Cottle. Coleridge asked Davy to proofread the second edition, the first to contain Wordsworth's "Preface to the Lyrical Ballads", in a letter dated 16 July 1800: "Will you be so kind as just to look over the sheets of the lyrical Ballads".<ref>{{cite book|last1=Coleridge|first1=Samuel Taylor|editor1-last=Griggs|editor1-first=E. L.|title=The Collected Letters of Samuel Taylor Coleridge|date=1956–1971|publisher=Clarendon Press|pages=vol 1, 606}}</ref> Wordsworth subsequently wrote to Davy on 29 July 1800, sending him the first manuscript sheet of poems and asking him specifically to correct: "any thing you find amiss in the punctuation a business at which I am ashamed to say I am no adept".<ref>{{cite book|last1=Wordsworth|first1=William|editor1-last=de Selincourt|editor1-first=E.|title=The Letters of William and Dorothy Wordsworth|url=https://archive.org/details/lettersofwilliam0006word|url-access=registration|date=1967|publisher=Clarendon Press|pages=vol. 1, 289}}</ref> [[Biography:William Wordsworth|Wordsworth]] was ill in the autumn of 1800 and slow in sending poems for the second edition; the volume appeared on 26 January 1801 even though it was dated 1800.<ref>{{cite journal|last1=Sharrock|first1=Roger|title=The Chemist and the Poet: Sir Humphry Davy and the Preface to the Lyrical Ballads|journal=Notes and Records of the Royal Society|date=1962|volume=17|pages=57–76|doi=10.1098/rsnr.1962.0006|s2cid=144053478}}</ref> While it is impossible to know whether Davy was at fault, this edition of the Lyrical Ballads contained many errors, including the poem "Michael" being left incomplete.<ref>{{cite book|last1=Wordsworth|first1=William|title=Lyrical Ballads|date=1800|publisher=Biggs & Cottle|page=210}}</ref> In a personal notebook marked on the front cover "Clifton 1800 From August to Novr", Davy wrote his own Lyrical Ballad: "As I was walking up the street".<ref>{{cite book|last1=Davy|first1=Humphry|title=Royal Institution HD 20c|pages=44, 46, 52}}</ref> Wordsworth features in Davy's poem as the recorder of ordinary lives in the line: "By poet Wordsworths Rymes" [sic].

===Royal Institution===
In 1799, Count Rumford had proposed the establishment in London of an 'Institution for Diffusing Knowledge', i.e. the Royal Institution. The house in Albemarle Street was bought in April 1799.{{sfn |Holmes |2008 |pp=285}} Rumford became secretary to the institution, and Dr [[Biography:Thomas Garnett (physician)|Thomas Garnett]] was the first lecturer.

[[Image:Royal Institution - Humphry Davy.jpg|thumb|right|400px|1802 satirical cartoon by James Gillray showing a Royal Institution lecture on pneumatics, with Davy holding the bellows and Count Rumford looking on at extreme right. Dr Thomas Garnett is the lecturer, holding the victim's nose.]]
In February 1801 Davy was interviewed by the committee of the Royal Institution, comprising Joseph Banks, [[Biography:Benjamin Thompson|Benjamin Thompson]] (who had been appointed Count Rumford) and [[Biography:Henry Cavendish|Henry Cavendish]]. Davy wrote to Davies Gilbert on 8 March 1801 about the offers made by Banks and Thompson, a possible move to London and the promise of funding for his work in galvanism. He also mentioned that he might not be collaborating further with Beddoes on therapeutic gases. The next day Davy left Bristol to take up his new post at the Royal Institution,<ref name="AOW"/> it having been resolved 'that Humphry Davy be engaged in the service of the Royal Institution in the capacity of assistant lecturer in chemistry, director of the chemical laboratory, and assistant editor of the journals of the institution, and that he be allowed to occupy a room in the house, and be furnished with coals and candles, and that he be paid a salary of 100l. per annum.'<ref name="DNB" />

On 25 April 1801, Davy gave his first lecture on the relatively new subject of 'Galvanism'. He and his friend Coleridge had had many conversations about the nature of human knowledge and progress, and Davy's lectures gave his audience a vision of human civilisation brought forward by scientific discovery. "It [science] has bestowed on him powers which may almost be called creative; which have enabled him to modify and change the beings surrounding him, and by his experiments to interrogate nature with power, not simply as a scholar, passive and seeking only to understand her operations, but rather as a master, active with his own instruments."<ref name="AOW"/> The first lecture garnered rave reviews, and by the June lecture Davy wrote to John King that his last lecture had attendance of nearly 500 people. "There was Respiration, Nitrous Oxide, and unbounded Applause. Amen!"<ref name="AOW"/>
Davy revelled in his public status.

Davy's lectures included spectacular and sometimes dangerous chemical demonstrations along with scientific information, and were presented with considerable showmanship by the young and handsome man.<ref name="Distillations">{{cite journal|last1=Knight|first1=David|title=Left Behind|journal=Distillations |date=2017|volume=2|issue=4|pages=40–43|url=https://www.sciencehistory.org/distillations/magazine/left-behind|access-date=22 March 2018}}</ref> 
Davy also included both poetic and religious commentary in his lectures, emphasizing that God's design was revealed by chemical investigations.   Religious commentary was in part an attempt to appeal to women in his audiences. Davy, like many of his enlightenment contemporaries, supported female education and women's involvement in scientific pursuits, even proposing that women be admitted to evening events at the Royal Society.
Davy acquired a large female following around London. In a satirical cartoon by Gillray, nearly half of the attendees pictured are female. His support of women caused Davy to be subjected to considerable gossip and innuendo, and to be criticised as unmanly.<ref name="Golinski">{{cite book|last1=Golinski|first1=Jan|title=The Experimental Self: Humphry Davy and the Making of a Man of Science|date=2016|publisher=The University of Chicago Press|location=Chicago|isbn=9780226351360|pages=70–85}}</ref>

When Davy's lecture series on Galvanism ended, he progressed to a new series on Agricultural Chemistry, and his popularity continued to skyrocket. By June 1802, after just over a year at the Institution and at the age of&nbsp;23, Davy was nominated to full lecturer at the Royal Institution of Great Britain. Garnett quietly resigned, citing health reasons.<ref name="AOW"/>

In November 1804 Davy became a Fellow of the Royal Society, over which he would later preside. He was one of the founding members of the Geological Society in 1807<ref>[http://www.geolsoc.org.uk/gsl/society/history History of the Geological Society], Geolsoc.org.uk</ref> and was elected a foreign member of the Royal Swedish Academy of Sciences in 1810 and a Foreign Honorary Member of the American Academy of Arts and Sciences in 1822.<ref name=AAAS>{{cite web|title=Book of Members, 1780–2010: Chapter D|url=http://www.amacad.org/publications/BookofMembers/ChapterD.pdf|publisher=American Academy of Arts and Sciences|access-date=8 September 2016}}</ref>

== Mid-career: 1802–1820 ==
=== Photographic enlargements ===
In June 1802 Davy published in the first issue of the ''Journals of the Royal Institution of Great Britain'' his ''An Account of a Method of Copying Paintings upon Glass, and of Making Profiles, by the Agency of Light upon Nitrate of Silver. Invented by T. Wedgwood, Esq. With Observations by H. Davy'' in which he described their experiments with the photosensitivity of [[Chemistry:Silver nitrate|silver nitrate]].<ref>{{Cite book|url=https://www.worldcat.org/oclc/7550618|title=Photography, essays & images : illustrated readings in the history of photography|date=1980|publisher=Museum of Modern Art|others=Newhall, Beaumont, 1908–1993.|isbn=0-87070-385-4|location=New York|oclc=7550618}}</ref><ref>{{Citation | author1=International Congress: Pioneers of Photographic Science and Technology (1st : 1986 : International Museum of Photography) | author2=Ostroff, Eugene  | title=Pioneers of photography : their achievements in science and technology | date=1987 | publisher=SPSE – The Society for Imaging Science and Technology; [Boston, Mass.] : Distributed by Northeastern University Press | isbn=978-0-89208-131-8}}</ref>

He recorded that "images of small objects, produced by means of the solar microscope, may be copied without difficulty on prepared paper." Josef Maria Eder, in his ''History of Photography,'' though crediting Wedgwood, because of his application of this quality of silver nitrate to the making of images, as "the first photographer in the world," proposes that it was Davy who realised the idea of photographic [[Engineering:Enlarger|enlargement]] using a solar microscope to project images onto sensitised paper. Neither found a means of fixing their images, and Davy devoted no more of his time to furthering these early discoveries in photography.<ref>(1932). Josef Maria Eder, ''Geschichte der Photographie''. Halle a. S: Knapp.</ref>

The principle of image projection using solar illumination was applied to the construction of the earliest form of photographic enlarger, the "[[Engineering:Solar camera|solar camera]]".

===Elements===
[[File:Sodium.jpg|thumb|left|100px|[[Chemistry:Sodium|Sodium]] metal, about 10 g, under oil]]
[[File:VoltaBattery.JPG|thumb|upright|A voltaic pile]]
[[File:Magnesium crystals.jpg|thumb|170px|[[Chemistry:Magnesium|Magnesium]] metal crystals]]

Davy was a pioneer in the field of [[Chemistry:Electrolysis|electrolysis]] using the voltaic pile to split common compounds and thus prepare many new elements. He went on to electrolyse molten salts and discovered several new metals, including [[Chemistry:Sodium|sodium]] and [[Chemistry:Potassium|potassium]], highly reactive elements known as the [[Chemistry:Alkali metal|alkali metal]]s. Davy discovered potassium in 1807, deriving it from caustic potash (KOH). Before the 19th century, no distinction had been made between potassium and sodium. Potassium was the first metal that was isolated by electrolysis. Davy isolated sodium in the same year by passing an electric current through molten [[Chemistry:Sodium hydroxide|sodium hydroxide]].<ref name="Distillations"/>

During the first half of 1808, Davy conducted a series of further electrolysis experiments on alkaline earths including [[Chemistry:Calcium carbonate|lime]], magnesia, strontites and barytes. At the beginning of June, Davy received a letter from the Swedish chemist Berzelius claiming that he, in conjunction with Dr. Pontin, had successfully obtained amalgams of calcium and barium by electrolysing lime and barytes using a mercury cathode. Davy managed to successfully repeat these experiments almost immediately and expanded Berzelius' method to strontites and magnesia.<ref>{{cite journal|last1=Davy|first1=Humphry|title=Electrochemical Researches, on the Decomposition of the Earths; With Observations in the Metals Obtained from the Alkaline Earths, and on the Amalgam Procured from Ammonia|journal=Philosophical Transactions of the Royal Society|date=1808|volume=98|pages=339–40|doi=10.1098/rstl.1808.0023|doi-access=free|bibcode=1808RSPT...98..333D}}</ref> He noted that while these amalgams oxidised in only a few minutes when exposed to air they could be preserved for lengthy periods of time when submerged in [[Chemistry:Naphtha|naphtha]] before becoming covered with a white crust.<ref>{{cite journal|last1=Davy|first1=Humphry|title=Electro-Chemical Researches, on the Decomposition of the Earths; With Observations on the Metals Obtained from the Alkaline Earths, and on the Amalgam Procured from Ammonia|journal=Philosophical Transactions of the Royal Society|date=1808|volume=98|page=340|doi=10.1098/rstl.1808.0023|doi-access=free|bibcode=1808RSPT...98..333D}}</ref>
On 30 June 1808 Davy reported to the Royal Society that he had successfully isolated four new metals which he named [[Chemistry:Barium|barium]], [[Chemistry:Calcium|calcium]], [[Chemistry:Strontium|strontium]] and magnium (later changed to [[Chemistry:Magnesium|magnesium]]) which were subsequently published in the ''Philosophical Transactions''. Although Davy conceded magnium was an "undoubtedly objectionable" name he argued the more appropriate name magnesium was already being applied to metallic manganese and wished to avoid creating an equivocal term.<ref name="Electro-chemical">{{cite journal|last1=Davy|first1=Humphry|title=Electro-chemical Researches, on the Decomposition of the Earths; With Observations in the Metals Obtained from the Alkaline Earths, and on the Amalgam Procured from Ammonia|journal=Philosophical Transactions of the Royal Society|date=1808|volume=98|page=346|doi=10.1098/rstl.1808.0023|doi-access=free|bibcode=1808RSPT...98..333D}}</ref>
The observations gathered from these experiments also led to Davy isolating [[Chemistry:Boron|boron]] in 1809.<ref name="Kenyon">{{cite journal|last1=Kenyon|first1=T. K.|title=Science and Celebrity: Humphry Davy's Rising Star |journal=Chemical Heritage Magazine |date=2008|volume=26 |issue=4|pages=30–35|url=https://www.sciencehistory.org/distillations/magazine/science-and-celebrity-humphry-davys-rising-star|access-date=22 March 2018}}</ref>

[[Chemistry:Chlorine|Chlorine]] was discovered in 1774 by Swedish chemist [[Biography:Carl Wilhelm Scheele|Carl Wilhelm Scheele]], who called it ''"dephlogisticated marine acid"'' (see [[Physics:Phlogiston theory|phlogiston theory]]) and mistakenly thought it contained [[Chemistry:Oxygen|oxygen]]. Davy showed that the acid of Scheele's substance, called at the time [[Chemistry:Chlorine#History|oxymuriatic acid]], contained no [[Chemistry:Oxygen|oxygen]]. This discovery overturned [[Biography:Antoine Lavoisier|Lavoisier's]] definition of acids as compounds of oxygen.<ref name="Distillations"/> In 1810, chlorine was given its current name by Humphry Davy, who insisted that chlorine was in fact an [[Chemistry:Chemical element|element]].<ref>{{cite journal |last=Davy |first= Humphry |title = On Some of the Combinations of Oxymuriatic Gas and Oxygene, and on the Chemical Relations of These Principles, to Inflammable Bodies |journal = Philosophical Transactions of the Royal Society|volume = 101|pages = 1–35|year = 1811|doi = 10.1098/rstl.1811.0001|url = https://zenodo.org/record/1432322|doi-access = free |bibcode = 1811RSPT..101....1D}}</ref> The name chlorine, chosen by Davy for "one of [the substance's] obvious and characteristic properties – its colour", comes from the Greek χλωρος (chlōros), meaning green-yellow.

==== Laboratory incident ====
Davy seriously injured himself in a laboratory accident with [[Chemistry:Nitrogen trichloride|nitrogen trichloride]].<ref name="Trans. RS, Davy, 1813" >{{cite journal
 |last=Humphry |first=Davy |title = On a New Detonating Compound
 |journal = [[Philosophy:Philosophical Transactions of the Royal Society|Philosophical Transactions of the Royal Society]]
 |year = 1813
 |volume = 103
 |pages = 1–7
 |doi = 10.1098/rstl.1813.0002
 |jstor=107383
|doi-access = free
 }}</ref> French chemist [[Biography:Pierre Louis Dulong|Pierre Louis Dulong]] had first prepared this compound in 1811, and had lost two fingers and an eye in two separate explosions with it. In a letter to John Children, on 16 November 1812, Davy wrote: "It must be used with great caution. It is not safe to experiment upon a globule larger than a pin's head. I have been severely wounded by a piece scarcely bigger. My sight, however, I am informed, will not be injured".<ref name="Knight 1992">{{cite book |last       = Knight
 |first      = David
 |title      = Humphry Davy: Science and Power
 |location   = Cambridge, UK
 |publisher  = Cambridge University Press
 |year       = 1992
 |isbn       = 978-0-631-16816-4
 |url        = https://archive.org/details/isbn_9780631168164
}}</ref> Davy's accident induced him to hire [[Biography:Michael Faraday|Michael Faraday]] as a co-worker, particularly for assistance with handwriting and record keeping. He had recovered from his injuries by April 1813.<ref name="Knight 1992"/>

=== Travels ===
====European tour====
[[File:Sir Humphry Davy, Bt by Sir Thomas Lawrence.jpg|thumb|right|upright|Sir Humphry Davy by Thomas Lawrence]]
[[File:Rough diamond.jpg|left|thumb|150px|A diamond crystal in its matrix]]
In 1812, Davy was knighted and gave up his lecturing position at the Royal Institution. He was given the title of Honorary Professor of Chemistry.<ref name="Knight 1992"/> He gave a farewell lecture to the Institution, and married a wealthy widow, Jane Apreece. (While Davy was generally acknowledged as being faithful to his wife, their relationship was stormy, and in later years he travelled to continental Europe alone.)
[[File:Davy-3.jpg|left|thumb|311x311px|Dedication page of an 1812 copy of "''Elements of Chemical Philosophy''," which Davy dedicated to his wife.]]
Davy then published his ''Elements of Chemical Philosophy, part 1, volume 1'', though other parts of this title were never completed. He made notes for a second edition, but it was never required.<ref name="Knight 1992"/> 
In October 1813, he and his wife, accompanied by [[Biography:Michael Faraday|Michael Faraday]] as his scientific assistant (also treated as a valet), travelled to France to collect the second edition of the ''prix du Galvanisme,'' a medal that Napoleon Bonaparte had awarded Davy for his electro-chemical work. Faraday noted "Tis indeed a strange venture at this time, to trust ourselves in a foreign and hostile country, where so little regard is had to protestations of honour, that the slightest suspicion would be sufficient to separate us for ever from England, and perhaps from life".<ref>{{cite book|last1=Jones|first1=H.B.|title=The life and letters of Faraday, Vol. 1|url=https://archive.org/details/dli.bengal.10689.1063|date=1870|page=[https://archive.org/details/dli.bengal.10689.1063/page/n85 75]}}</ref> Davy's party sailed from Plymouth to Morlaix by cartel, where they were searched.<ref name="Knight 1992"/>

Upon reaching Paris, Davy was a guest of honour at a meeting of the First Class of the {{lang|fr|Institut de France|italic=no}} and met with [[Biography:André-Marie Ampère|André-Marie Ampère]] and other French chemists.<ref name="Knight 1992"/> It was later reported that Davy's wife had thrown the medal onto the sea, near her Cornish home, "as it raised bad memories". The Royal Society of Chemistry has offered over £1,800 for the recovery of the medal.<ref>{{Cite web|url=http://news.bbc.co.uk/2/hi/uk_news/7298375.stm|title=Napoleon's medal 'cast into sea'|date=15 March 2008|access-date=23 October 2021|website=News.bbc.co.uk}}</ref>

While in Paris, Davy attended lectures at the Ecole Polytechnique, including those by [[Biography:Joseph Louis Gay-Lussac|Joseph Louis Gay-Lussac]] on a mysterious substance isolated by [[Biography:Bernard Courtois|Bernard Courtois]]. Davy wrote a paper for the Royal Society on the element, which is now called [[Chemistry:Iodine|iodine]].<ref>{{cite journal |last=Davy |first=H. |title=Sur la nouvelle substance découverte par M. Courtois, dans le sel de Vareck |journal=Annales de chimie |volume=88|page=322|year=1813}}</ref><ref>{{cite journal |last=Davy |first=Humphry |title=Some Experiments and Observations on a New Substance Which Becomes a Violet Coloured Gas by Heat |journal=Phil. Trans. R. Soc. Lond. |volume=104 |pages=74–93|date=1 January 1814 |doi=10.1098/rstl.1814.0007 |doi-access=free }}</ref> This led to a dispute between Davy and Gay-Lussac on who had the priority on the research.<ref name="Knight 1992"/>

Davy's party did not meet Napoleon in person, but they did visit the Empress Joséphine de Beauharnais at the Château de Malmaison.<ref name="Knight 1992"/> The party left Paris in December 1813, travelling south to Italy.<ref name="Williams, 1965" >For information on the continental tour of Davy and Faraday, see {{cite book
 |last=Williams |first=L. Pearce
 |title = Michael Faraday: A Biography
 |url=https://archive.org/details/michaelfaradaybi00will |url-access=registration |year = 1965
 |page=[https://archive.org/details/michaelfaradaybi00will/page/36 36]
 |publisher = Basic Books|location = New York
 |isbn=978-0-306-80299-7
}}</ref> They sojourned in [[Place:Florence|Florence]], where using the [[Physics:Burning glass|burning glass]] of the Grand Duke of Tuscany <ref>* {{cite book
 |last = Faraday |first = Michael
 |title = Curiosity Perfectly Satisfyed: Faraday's Travels in Europe, 1813–1815
 |editor1-last= Bowers
 |editor1-first= Brian
 |editor2-last= Symons
 |editor2-first= Lenore
 |location = London|publisher = Peregrinus
 |year = 1991
 |isbn = 9780863412349
}}</ref> in a series of experiments conducted with Faraday's assistance, Davy succeeded in using the sun's rays to ignite [[Chemistry:Diamond|diamond]], proving it is composed of pure [[Chemistry:Carbon|carbon]].

Davy's party continued to Rome, where he undertook experiments on iodine and chlorine and on the colours used in ancient paintings. This was the first chemical research on the pigments used by artists.<ref name="Knight 1992"/>

He also visited Naples and [[Earth:Mount Vesuvius|Mount Vesuvius]], where he collected samples of crystals. By June 1814, they were in Milan, where they met [[Biography:Alessandro Volta|Alessandro Volta]], and then continued north to [[Place:Geneva|Geneva]]. They returned to Italy via [[Place:Munich|Munich]] and [[Place:Innsbruck|Innsbruck]], and when their plans to travel to Greece and Istanbul were abandoned after Napoleon's escape from Elba, they returned to England.

After the Battle of Waterloo, Davy wrote to Lord Liverpool urging that the French be treated with severity:

{{Blockquote|My Lord, I need not say to Your Lordship that the capitulation of Paris not a treaty;  lest everything belonging to the future state of that capital & of France is open to discussion & that France is a conquered country.  It is the duty of the allies to give her more restricted boundaries which shall not encroach upon the natural limits of other nations.  to weaken her on the side of Italy, Germany & Flanders.  To take back from her by contributions the wealth she has acquired by them to suffer her to retain nothing that the republican or imperial armies have stolen:  This last duty is demanded no less by policy than justice.|Sir Humphry Davy
|Letter to Lord Liverpool<ref name="Knight 1992"/><ref>{{cite web|last1=Davy|first1=Humphry|title=Letter to Lord Liverpool, Summer 1815[?]|url=http://www.davy-letters.org.uk/|website=List of letters: Humphry Davy and his circle|access-date=4 May 2017}}</ref>}}<gallery>
File:Davy-1.jpg|1812 copy of "''Elements of Chemical Philosophy''"
File:Davy-2.jpg|Title page of an 1812 copy of "''Elements of Chemical Philosophy''"
File:Davy-4.jpg|Table of contents page of an 1812 copy of "''Elements of Chemical Philosophy''"
File:Davy-5.jpg|Introduction of an 1812 copy of "''Elements of Chemical Philosophy''"
File:Davy-6.jpg|Introduction (continued) of an 1812 copy of "''Elements of Chemical Philosophy''"
</gallery>

===Davy lamp===
[[Image:Davy lamp.png|thumb|200px|upright|The Davy lamp]]
[[Image:HumphryDavyStatueNew2.jpg|right|thumb|200px|Statue of Davy in Penzance, Cornwall, holding his safety lamp]]
After his return to England in 1815, Davy began experimenting with lamps that could be used safely in coal mines. The Revd Dr Robert Gray of Bishopwearmouth in Sunderland, founder of the Society for Preventing Accidents in Coalmines, had written to Davy suggesting that he might use his 'extensive stores of chemical knowledge' to address the issue of mining explosions caused by firedamp, or [[Chemistry:Methane|methane]] mixed with oxygen, which was often ignited by the open flames of the lamps then used by miners. Incidents such as the Felling mine disaster of 1812 near Newcastle, in which 92 men were killed, not only caused great loss of life among miners but also meant that their widows and children had to be supported by the public purse. The Revd Gray and a fellow clergyman also working in a north-east mining area, the Revd John Hodgson of Jarrow, were keen that action should be taken to improve underground lighting and especially the lamps used by miners.<ref>Knight, David (1992). Humphry Davy: Science and Power. Cambridge: Cambridge University Press, pp. 105–06. {{ISBN|0-631-16816-8}}.</ref>

Davy conceived of using an iron gauze to enclose a lamp's flame, and so prevent the methane burning inside the lamp from passing out to the general atmosphere. Although the idea of the [[Engineering:Safety lamp|safety lamp]] had already been demonstrated by William Reid Clanny and by the then unknown (but later very famous) engineer George Stephenson, Davy's use of [[Engineering:Wire gauze|wire gauze]] to prevent the spread of flame was used by many other inventors in their later designs. George Stephenson's lamp was very popular in the north-east coalfields, and used the same principle of preventing the flame reaching the general atmosphere, but by different means.{{sfn |Holmes |2008 |pp=364–73}} Unfortunately, although the new design of gauze lamp initially did seem to offer protection, it gave much less light, and quickly deteriorated in the wet conditions of most pits. Rusting of the gauze quickly made the lamp unsafe, and the number of deaths from firedamp explosions rose yet further.

There was some discussion as to whether Davy had discovered the principles behind his lamp without the help of the work of [[Biography:Smithson Tennant|Smithson Tennant]], but it was generally agreed that the work of both men had been independent. Davy refused to patent the lamp, and its invention led to his being awarded the Rumford medal in 1816.<ref name="ODNB" >[[Biography:David M. Knight|David Knight]] (2004) [http://www.oxforddnb.com/view/article/7314 "Davy, Sir Humphry, baronet (1778–1829)"] in ''Oxford Dictionary of National Biography'', [[Organization:Oxford University Press|Oxford University Press]]</ref>

==== Acid studies ====
In 1815 Davy also suggested that [[Chemistry:Acid|acid]]s were substances that contained replaceable [[Chemistry:Hydrogen|hydrogen]]&nbsp;ions;– hydrogen that could be partly or totally replaced by reactive metals which are placed above hydrogen in the reactivity series. When acids reacted with metals they formed [[Chemistry:Salt|salt]]s and hydrogen gas. [[Chemistry:Base|Base]]s were substances that reacted with acids to form salts and water. These definitions worked well for most of the nineteenth century.<ref>HSC, ''Conquering Chemistry'' Fourth Edition p. 146.</ref>

===Herculaneum papyri===

Davy experimented on fragments of the Herculaneum papyri before his departure to Naples in 1818. His early experiments showed hope of success. In his report to the Royal Society Davy writes that: 
'When a fragment of a brown MS. in which the layers were strongly adhered, was placed in an atmosphere of chlorine, there was an immediate action, the papyrus smoked and became yellow, and the letters appeared much more distinct; and by the application of heat the layers separated from each other, giving fumes of [[Chemistry:Hydrochloric acid|muriatic acid]].'<ref>Davy, 1821, page 193</ref><ref name="Davy">{{cite journal|last1=Davy|first1=Humphry|title=Some Observations and Experiments on the Papyri Found in the Ruins of Herculaneum|journal=Philosophical Transactions|date=January 1821|volume=111|pages=191–208|jstor=107613|bibcode=1821RSPT..111..191D|doi=10.1098/rstl.1821.0016|doi-access=free}}</ref>

The success of the early trials prompted Davy to travel to Naples to conduct further research on the Herculaneum papyri. Accompanied by his wife, they set off on 26 May 1818 to stay in Flanders where Davy was invited by the coal miners to speak.<ref>{{cite book|last1=Davy|first1=John|title=Memoirs of the life of Sir Humphry Davy|url=https://archive.org/details/memoirslifesirh01davygoog|date=1836|publisher=Longman, Rees, Orme, Brown, Green & Longman|location=London|page=[https://archive.org/details/memoirslifesirh01davygoog/page/n9 97]}}</ref> They then traveled to Carniola (now Slovenia) which proved to become 'his favourite Alpine retreat' before finally arriving in Italy. In Italy, they befriended Lord Byron in Rome and then went on to travel to Naples.<ref>{{cite book|last1=Knight|first1=David|title=Humphry Davy: Science & Power|date=1992|publisher=Cambridge University Press|location=Cambridge|page=118}}</ref>

Initial experiments were again promising and his work resulted in 'partially unrolling 23 MSS., from which fragments of writing were obtained' <ref name="Davy page 203">Davy, 1821, page 203</ref> but after returning to Naples on 1 December 1819 from a summer in the Alps, Davy complained that 'the Italians at the museum [were] no longer helpful but obstructive'.<ref>page 119 of Knight 1992</ref> Davy decided to renounce further work on the papyri because 'the labour, in itself difficult and unpleasant, been made more so, by the conduct of the persons at the head of this department in the Museum'.<ref name="Davy page 203"/>

== Later life: 1820–1829==
===Protection of ships' bottoms===
From 1761 onwards, copper plating had been fitted to the undersides of Royal Navy ships to protect the wood from attack by [[Biology:Shipworms|shipworms]].<ref name="Physis">{{cite journal|last1=James|first1=Frank A. J. L.|title=Davy in the Dockyard: Humphry Davy, the Royal Society and the Electro-chemical Protection of the Copper Sheeting of His Majesty's Ships in the mid 1820s|journal=Physis|date=1992|volume=29|pages=205–25}}</ref> However, the copper bottoms were gradually corroded by exposure to the salt water. Between 1823 and 1825, Davy, assisted by [[Biography:Michael Faraday|Michael Faraday]], attempted to protect the copper by [[Chemistry:Electrochemistry|electrochemical]] means. He attached to the copper sacrificial pieces of [[Chemistry:Zinc|zinc]] or [[Chemistry:Iron|iron]], which provided [[Physics:Cathodic protection|cathodic protection]] to the host metal.<ref>{{cite book|last1=Knight|first1=David|title=Humphry Davy: Science and Power|date=1992|publisher=Cambridge University Press|location=Cambridge |page=145}}</ref> It was discovered, however, that protected copper became foul quickly, i.e. pieces of weed and/or marine creatures became attached to the hull, which had a detrimental effect on the handling of the ship.
 
The Navy Board approached Davy in 1823, asking for help with the corrosion. Davy conducted a number of tests in Portsmouth Dockyard, which led to the Navy Board adopting the use of Davy's "protectors". By 1824, it had become apparent that fouling of the copper bottoms was occurring on the majority of protected ships. By the end of 1825, the Admiralty ordered the Navy Board to cease fitting the protectors to sea-going ships, and to remove those that had already been fitted. Davy's scheme was seen as a public failure, despite success of the corrosion protection as such.  As Frank A. J. L. James explains, "[Because] the poisonous salts from [corroding] copper were no longer entering the water, there was nothing to kill the barnacles and the like in the vicinity of a ship. This meant that barnacles [and the like] could now attach themselves to the bottom of a vessel, thus impeding severely its steerage, much to the anger of the captains who wrote to the Admiralty to complain about Davy's protectors."<ref name="James">{{cite book|last1=James|first1=Frank A. J. L.|title=Complete dictionary of scientific biography, e-book, eds Charles Coulston Gillispie, Frederic Lawrence Holmes, and Noretta Koertge|date=2008|publisher=Charles Scribner's Sons|location=Detroit, Michigan}}</ref>

===President of the Royal Society===
Elections took place on St Andrew's Day and Davy was elected on 30 November 1820. Although he was unopposed, other candidates had received initial backing. These candidates embodied the factional difficulties that beset Davy's presidency and which eventually defeated him.

The Society was in transition from a club for gentlemen interested in natural philosophy, connected with the political and social elite, to an academy representing increasingly specialised sciences. The previous president, Joseph Banks, had held the post for over 40 years and had presided autocratically over what [[Biography:David Philip Miller|David Philip Miller]] calls the "Banksian Learned Empire", in which natural history was prominent.<ref>[[Biography:David Philip Miller|David Philip Miller]], "Between hostile camps: Sir Humphry Davy's presidency of the Royal Society of London", ''British Journal for the History of Science'' (1983): 1–47.</ref>

Banks had groomed the engineer, author and politician Davies Gilbert to succeed him and preserve the status quo, but Gilbert declined to stand. Fellows who thought royal patronage was important proposed Prince Leopold of Saxe-Coburg (later Leopold I of Belgium), who also withdrew, as did the Whig Edward St Maur, 11th Duke of Somerset. Davy was the outstanding scientist but some fellows did not approve of his popularising work at the Royal Institution.

The strongest alternative had been [[Biography:William Hyde Wollaston|William Hyde Wollaston]], who was supported by the "Cambridge Network" of outstanding mathematicians such as Charles Babbage and [[Biography:John Herschel|John Herschel]], who tried to block Davy. They were aware that Davy supported some modernisation, but thought that he would not sufficiently encourage aspiring young mathematicians, astronomers and geologists, who were beginning to form specialist societies. Davy was only 41, and reformers were fearful of another long presidency.

In his early years Davy was optimistic about reconciling the reformers and the Banksians. In his first speech as president he declared, "I trust that, with these new societies, we shall always preserve the most amicable relations ... I am sure there is no desire in [the Royal Society] to exert anything like patriarchal authority in relation to these institutions".<ref>Cited in David Philip Miller, "Between hostile camps: Sir Humphry Davy's presidency of the Royal Society of London", ''British Journal for the History of Science'' (1983): 30–31.</ref>

Davy spent much time juggling the factions but, as his reputation declined in the light of failures such as his research into copper-bottomed ships, he lost popularity and authority. This was compounded by a number of political errors. In 1825 his promotion of the new Zoological Society, of which he was a founding fellow, courted the landed gentry and alienated expert zoologists. He offended the mathematicians and reformers by failing to ensure that Babbage received one of the new Royal Medals (a project of his) or the vacant secretaryship of the Society in 1826. In November 1826 the mathematician Edward Ryan recorded that: "The Society, every member almost ... are in the greatest rage at the President's proceedings and nothing is now talked of but removing him."<ref>Cited in David Philip Miller, "Between hostile camps: Sir Humphry Davy's presidency of the Royal Society of London", ''British Journal for the History of Science'' (1983): 39.</ref>

In the event he was again re-elected unopposed, but he was now visibly unwell. In January 1827 he set off to Italy for reasons of his health. It did not improve and, as the 1827 election loomed, it was clear that he would not stand again. He was succeeded by Davies Gilbert.

===Final years===
[[Image:M Faraday Th Phillips oil 1842.jpg|thumb|180px|upright|left|Michael Faraday, portrait by Thomas Phillips c. 1841–1842<ref>{{Cite web|url=http://www.npg.org.uk/live/search/portrait.asp?mkey=mw02170|title=National Portrait gallery NPG 269|website=Npg.org.uk|access-date=23 October 2021|archive-date=6 December 2008|archive-url=https://web.archive.org/web/20081206013152/http://www.npg.org.uk/live/search/portrait.asp?mkey=mw02170|url-status=dead}}</ref>]]
In 1818, Davy was awarded a baronetcy.<ref>{{London Gazette |issue=17410 |date=20 October 1818 |page=1875}}</ref> Although [[Biography:Francis Bacon|Sir Francis Bacon]] (also later made a peer<ref>As Baron Verulam and later Viscount St Alban.</ref>) and [[Biography:Isaac Newton|Sir Isaac Newton]] had already been knighted, this was the first such honour ever conferred on a man of science in Britain. It was followed a year later with the Presidency of the Royal Society.

Davy's laboratory assistant, [[Biography:Michael Faraday|Michael Faraday]], went on to enhance Davy's work and would become the more famous and influential scientist. Davy is supposed to have even claimed Faraday as his greatest discovery. Davy later accused Faraday of [[Social:Plagiarism|plagiarism]], however, causing Faraday (the first Fullerian Professor of Chemistry) to cease all research in [[Physics:Classical electromagnetism|electromagnetism]] until his mentor's death.

According to one of Davy's biographers, June Z. Fullmer, he was a [[Philosophy:Deism|deist]].<ref>{{cite book|title=Young Humphry Davy: The Making of an Experimental Chemist, Volume 237|last=Fullmer|first=June Z.|publisher=American Philosophical Society|year=2000|isbn=9780871692375|page=[https://archive.org/details/younghumphrydavy0000full/page/158 158]|quote=In prominent alliance with his concept, Davy celebrated a natural-philosophic deism, for which his critics did not attack him, nor, indeed, did they bother to mention it. Davy never appeared perturbed by critical attacks on his "materialism" because he was well aware that his deism and his materialism went hand in hand; moreover, deism appeared to be the abiding faith of all around him.|url=https://archive.org/details/younghumphrydavy0000full/page/158}}</ref>

Of a sanguine, somewhat irritable temperament, Davy displayed characteristic enthusiasm and energy in all his pursuits. As is shown by his verses and sometimes by his prose, his mind was highly imaginative; the poet Coleridge declared that if he "had not been the first chemist, he would have been the first poet of his age", and Southey said that "he had all the elements of a poet; he only wanted the art." In spite of his ungainly exterior and peculiar manner, his happy gifts of exposition and illustration won him extraordinary popularity as a lecturer, his experiments were ingenious and rapidly performed, and Coleridge went to hear him "to increase his stock of metaphors." The dominating ambition of his life was to achieve fame; occasional petty jealousy did not diminish his concern for the "cause of humanity", to use a phrase often employed by him in connection with his invention of the miners' lamp. Careless about etiquette, his frankness sometimes exposed him to annoyances  he might have avoided by the exercise of tact.<ref>{{EB1911|inline=1|wstitle=Davy, Sir Humphry|volume=7|pages=871–73}}</ref>

[[Image:davygrave.jpg|thumb|right|Davy's grave at Cimetière Plainpalais in Geneva]]
In 1826 he suffered a stroke from which he never fully recovered. He spent the last months of his life writing ''Consolations in Travel'', an immensely popular, somewhat freeform compendium of poetry, thoughts on science and philosophy. Published posthumously, the work became a staple of both scientific and family libraries for several decades afterward. Davy spent the winter in Rome, hunting in the Campagna on his fiftieth birthday. But on 20 February 1829 he had another stroke. After spending many months attempting to recuperate, Davy died in a room at L'Hotel de la Couronne, in the Rue du Rhone, in [[Place:Geneva|Geneva]], Switzerland, on 29 May 1829.<ref name="Paris">{{Cite web |url=https://books.google.com/books?id=HQ82AQAAMAAJ&pg=RA1-PA515 |title=The Life of Sir Humphry Davy |first=John Ayrton |last=Paris |date=18 September 1831 |publisher=H. Colburn and R. Bentley |via=Google Books |page=515 |access-date=18 September 2021}}</ref><ref name="ODNB"/> He had wished to be buried where he died, but had also wanted the burial delayed in case he was only [[Medicine:Coma|coma]]tose. He refused to allow a post-mortem for similar reasons. But the laws of Geneva did not allow any delay and he was given a public funeral on the following Monday, 1 June, in the Plainpalais Cemetery, outside the city walls.<ref name="Paris"/>

==Honours==
===Geographical locations===
*Shortly after his funeral, his wife organised a memorial tablet for him in Westminster Abbey at a cost of £142.<ref>'The Abbey Scientists' Hall, A.R. p59: London; Roger & Robert Nicholson; 1966</ref><ref>{{cite book
 |last = Knight
 |first = David
 |title = Humphry Davy: Science and Power
 |year = 1992
 |publisher = Cambridge University Press
 |location = Cambridge
 |page = [https://archive.org/details/isbn_9780631168164/page/168 168]
 |isbn = 978-0-631-16816-4
 |url = https://archive.org/details/isbn_9780631168164/page/168
 }}</ref><ref>Davy is buried in plot 208 of the Plainpalais Cemetery, Rue des Rois, Geneva. For contemporary information on Davy's funeral service and memorials, see {{cite book
 |last=Paris |first=John Ayrton
 |title = The Life of Sir Humphry Davy, Bart., LL.D.
 |year = 1831
 |publisher = Henry Colburn and Richard Bentley|location = London
 |pages = 516–17
 |url = https://books.google.com/books?id=e5oEAAAAYAAJ&pg=PA516
}}</ref>
*In 1872, a statue of Davy was erected in front of the Market Building, Penzance, (now owned by Lloyds TSB) at the top of Market Jew Street, Penzance.<ref>{{Cite web | url=https://www.cornwalls.co.uk/photos/humphry-davy-statue-penzance-3792.htm | title=Humphry Davy Statue – Penzance|website=Cornwalls.co.uk| date=16 February 2012}}</ref>
*A commemorative slate plaque on 4 Market Jew Street, Penzance, claims the location as his birthplace.<ref>{{Cite web |url=http://www.blueplaqueplaces.co.uk/humphry-davy-slate-plaque-in-penzance-11576 |title=Humphry Davy slate plaque in Penzance &#124; Blue Plaque Places |access-date=19 March 2018 |archive-date=20 March 2018 |archive-url=https://web.archive.org/web/20180320105431/http://www.blueplaqueplaces.co.uk/humphry-davy-slate-plaque-in-penzance-11576 |url-status=dead }}</ref> a secondary school in Coombe Road, Penzance, is named Humphry Davy School.<ref>{{Cite web | url=http://www.humphry-davy.cornwall.sch.uk | title=Welcome to Humphry Davy School|website=Humphry-davy.cornwall.sch.uk}}</ref> 
*A pub at 32 Alverton Street, Penzance, is named "The Sir Humphry Davy".<ref>{{Cite web | url=https://www.cornwalls.co.uk/photos/sir-humphry-davy-pub-penzance-1482.htm |title = Sir Humphry Davy pub –Penzance|website=Cornwalls.co.uk|date = 9 June 2006}}</ref><ref>{{Cite web | url=https://whatpub.com/pubs/COR/382/sir-humphry-davy-penzance |title = Sir Humphry Davy, Penzance|website=Whatpub.com}}</ref>
*One of the science buildings of the [[Organization:University of Plymouth|University of Plymouth]] is named ''The Davy Building''.<ref>{{Cite web | url=https://www.plymouth.ac.uk/your-university/our-stories/150/legacy/building-plaques |title = Building plaques|website=Plymouth.ac.uk}}</ref>
*There is a road named Humphry Davy Way adjacent to the docks in Bristol.<ref>{{Cite web|url=http://www.britishstreets.info/humphry-davy-way-hotwells-bristol-bristol|title = Britishstreets|website=Britishstreets.info}}</ref>
*Outside the entrance to Sunderland Football Club's Stadium of Light stands a giant Davy Lamp, in recognition of local mining heritage and the importance of Davy's safety lamp to the mining industry.<ref>{{Cite web | url=https://www.safc.com/news/club-news/2017/july/the-story-behind-the-sol |title = The story behind the SoL|website=Safc.com|date = 19 July 2017}}</ref>
*There is a street named Humphry-Davy-Straße in the industrial quarter of the town of Cuxhaven, Schleswig-Holstein, Germany.<ref>{{Cite web | url=http://www.meinestadt.de/cuxhaven/stadtplan/strasse/humphry-davy-str. | title=Humphry-Davy-STR., Cuxhaven Stadtplan |website=Meinestadt.de}}</ref>
*A satellite of the [[Organization:University of Sheffield|University of Sheffield]] at Golden Smithies Lane in Wath upon Dearne (Manvers) was called Humphry Davy House and was home to the School of Nursing and Midwifery until April 2009.<ref>[http://www.bulkloader.prd.pl.artirix.com.s3.amazonaws.com/1df62407-afc6-434d-8704-96b36b615888_123210.pdf] {{dead link|date=October 2021}}</ref>
*Davy Sound in [[Place:Greenland|Greenland]] was named in his honour by William Scoresby (1789–1857).<ref name="cat">{{Cite web|url=https://data.geus.dk/geusmap/?mapname=stednavnedb#baslay=baseMapGl&optlay=&extent=549832.8357720698,8582739.868248867,622444.3190166993,8680765.370629115&layers=grl_geus_north_east_higgins_map,grl_ne_higgins_placenames,grl_ne_placenames&filter_1=txt_search.part=&placename=&filter_2=txt_search.part=&placename=|title=Place names, northern East Greenland|website=Data.geus.dk}}</ref>
*There is a 'zone of activity' commercial area in La Grand-Combe, Gard, France, a former mining town, named after Davy.<ref>{{Cite web |date=17 August 2017 |title=Parc régional d'activité économiques Humphry Davy |url=https://www.lagrandcombe.fr/3117-2/ |access-date=12 April 2022 |website=Mairie de la grand combe |language=fr-FR}}</ref>
*Mount Davy in New Zealand's Paparoa Range was named after him by Julius von Haast.<ref>{{LINZ|id=30936 |name=Mount Davy |access-date=21 August 2022}}</ref>

===Scientific and literary recognition===
*in 1827, the mineral davyne was named in his honour by W. Haidinger.<ref>{{cite journal|last1=Haidinger|first1=W|title=Über den Davyn, eine neue Mineralspecies|journal=Annalen der Physik und Chemie|date=1827|volume=87|issue=11|pages=470–74|doi=10.1002/andp.18270871111|bibcode=1828AnP....87..470H|url=https://zenodo.org/record/1423516}}</ref>
*Annually since 1877, the Royal Society of London has awarded the Davy Medal "for an outstandingly important recent discovery in any branch of chemistry."<ref>{{Cite web | url=https://royalsociety.org/grants-schemes-awards/awards/davy-medal/ |title = Davy Medal |website=Royalsociety.org}}</ref>
*The [[Astronomy:Davy (crater)|Davy]] lunar crater is named after him. It has a diameter of 34&nbsp;km and its coordinates are 11.8S, 8.1W.<ref>[http://www.wenamethestars.inkleby.com/feature/1429] {{dead link|date=October 2021}}</ref>
*Davy's passion for fly-fishing earned him the informal title "the father of modern fly-fishing", and his book ''Salmonia''<ref>{{Cite web|url=https://archive.org/details/salmoniadaysfly01davygoog|title=Salmonia: Days of Fly Fishing. In a Series of Conversations; with Some Account of the Habits of ...|date=23 October 1832|publisher=Carey and Lea|access-date=23 October 2021|website=Archive.org}}</ref> is often considered to be "the fly-fisherman bible".
*The poet [[Biography:Samuel Taylor Coleridge|Samuel Taylor Coleridge]] said he "attended Davy's lectures to enlarge my stock of metaphors".{{sfn|Holmes|2008|p=288}}

==In popular culture==
;Novels and poetry
*Davy is the subject of a humorous song by Richard Gendall, recorded in 1980 by folk-singer Brenda Wootton in the album ''Boy Jan Cornishman'',<ref>{{Cite web | url=https://www.brendawootton.eu/storepage1776509.aspx | title=Brenda Wootton: Complete Discography | website=Brendawootton.eu | access-date=16 February 2018 | archive-date=17 February 2018 | archive-url=https://web.archive.org/web/20180217083106/https://www.brendawootton.eu/storepage1776509.aspx | url-status=dead }}</ref> the seven verses of which each recall a day of the week on which Davy purportedly made a particular discovery.<ref>{{Cite web | url=https://mudcat.org/thread.cfm?threadid=119413 | title=Brenda Wooton and Humphry Davy|website=Mudcat.org}}</ref>
*English playwright Nick Darke wrote ''Laughing Gas'' (2005) a comedy script about the life of Sir Humphry Davy, unfinished at the time of Nick Darke's death; completed posthumously by actor and playwright Carl Grose and produced by the Truro-based production company O-region.
*Edmund Clerihew Bentley's first clerihew, published in 1905, was written about Sir Humphry Davy:
:Sir Humphry Davy
:Abominated gravy.
:He lived in the odium
:Of having discovered [[Chemistry:Sodium|sodium]].<ref>{{cite book|first=E. Clerihew|last=Bentley|title=The First Clerihews|publisher=Oxford University Press|year=1982|isbn=978-0-19-212980-2}}</ref>
* There is a humorous rhyme of unknown origin about the statue in Penzance: 
:Sir Humphrey Davy's kindly face, 
:Is turned away from Market Place
:Towards St Michael's Mount
:So, if he do want to tell the time
:He've got to wait till the clock do chime 
:Then he's forced to count.<ref>{{Cite web|url=https://mudcat.org/thread.cfm?threadid=119413|title=Brenda Wooton and Humphry Davy|first=Max|last=Spiegel|website=Mudcat.org|access-date=23 October 2021}}</ref>
*Jules Verne refers to Davy's geological theories in his 1864 novel ''Journey to the Centre of the Earth''
* On the 2021 TV show Avenue 5, when asked who he is referring to, Captain Ryan, played by Hugh Laurie, responds, "Who do you think? Sir Humphrey Davy?"

==Publications==
See Fullmer's work for a full list of Davy's articles.<ref name="Fullmer" >Fullmer, 1969</ref>

Humphry Davy's books are as follows:
* {{cite book
 |last=Davy 
 |first=Humphry 
 |author-mask=1 
 |title=Researches, Chemical and Philosophical; Chiefly Concerning Nitrous Oxide, or Dephlogisticated Nitrous Air, and Its Respiration 
 |location=Bristol 
 |publisher=Biggs and Cottle 
 |year=1800 
 |url=https://archive.org/details/researcheschemi00davygoog
 |page=[https://archive.org/details/researcheschemi00davygoog/page/n159 1]
 |access-date=18 September 2016  
}}
*{{cite book
 |author-mask=1
 |title = Elements of Chemical Philosophy
 |publisher = Johnson and Co.
 |location = London
 |url = https://archive.org/details/elementschemica00davygoog
 |page= [https://archive.org/details/elementschemica00davygoog/page/n17 1] |year = 1812
 |isbn= 978-0-217-88947-6
}}
*{{cite book
 |author-mask=1
 |title = Elements of Agricultural Chemistry in a Course of Lectures
 |url= https://archive.org/details/b29331250 |location = London
 |publisher = Longman
 |year=1813
}}
*{{cite book
 |author-mask=1
 |title = The Papers of Sir H. Davy
 |publisher = Emerson Charnley|location = Newcastle
 |year=1816
}} (on Davy's safety lamp)
*{{cite book
 |author-mask=1
 |title = Discourses to the Royal Society
 |url = https://archive.org/details/sixdiscoursesde00britgoog
 |location = London|publisher = John Murray
 |year = 1827
}}
*{{cite book
 |author-mask=1
 |title = Salmonia or Days of Fly Fishing
 |location = London|publisher = John Murray
 |year = 1828
 |url = https://archive.org/details/salmoniadaysfly01davygoog
|page= [https://archive.org/details/salmoniadaysfly01davygoog/page/n99 13] }}
*{{cite book
 |author-mask=1
 |title = Consolations in Travel or The Last Days of a Philosopher
 |year = 1830
 |publisher = John Murray|location = London
 |url = https://archive.org/details/bub_gb_UnU0AAAAMAAJ
|page= [https://archive.org/details/bub_gb_UnU0AAAAMAAJ/page/n13 1] }}
Davy also contributed articles on chemistry to ''Rees's Cyclopædia'', but the topics are not known.

His collected works were published in 1839–1840:
*{{cite book
 |last= Davy |first=John
 |title = The Collected Works of Sir Humphry Davy
 |url= https://archive.org/details/bub_gb_FZVMAAAAYAAJ |location = London|publisher = Smith, Elder, and Company
 |year = 1839–1840
 |isbn = 978-0-217-88944-5
}}

==See also==
* List of presidents of the Royal Society

==References==
=== Bibliography ===
{{Reflist}}

===Sources===
==== Primary sources ====
*{{cite journal|last1=Davy|first1=Humphry|title=Some Observations and Experiments on the Papyri Found in the Ruins of Herculaneum|journal=Philosophical Transactions|date=January 1821|volume=111|pages=191–208|ref=Davy, 1821|bibcode=1821RSPT..111..191D|doi=10.1098/rstl.1821.0016|doi-access=free}}
*{{cite book
 |last=Fullmer |first=June Z.
 |title = Sir Humphry Davy's Published Works
 |url=https://archive.org/details/sirhumphrydavysp0000full |url-access=registration |location = Cambridge, Massachusetts|publisher = Harvard University Press
 |year = 1969
 |ref=Fullmer, 1969
 |isbn=978-0-674-80961-1
}}
*{{cite journal
 |title=The Wilkins Lecture. Sir Humphry Davy, Bt., P.R.S. 1778–1829
 |journal=Proceedings of the Royal Society A
 |volume=255
 |issue=1281
 |year=1960
 |pages=153–80
 |doi=10.1098/rspa.1960.0060
|bibcode=1960RSPSA.255..153H
 |jstor=2413906
|s2cid=176370921 }}
*{{cite book
 |title = Humphry Davy
 |location = London|publisher = Nelson
 |year = 1966
 |isbn=978-0-85409-729-6
}}
* {{cite book |last=Holmes | first=Richard | year=2008 | title=The age of wonder | publisher=Vintage Books|location=New York |isbn=978-1-4000-3187-0}}
*{{cite book |last       = Knight
 |first      = David
 |title      = Humphry Davy: Science and Power
 |location   = Cambridge
 |publisher  = Cambridge University Press
 |year       = 1992
 |isbn       = 978-0-631-16816-4
 |url        = https://archive.org/details/isbn_9780631168164
}}
*{{cite book
 |last=Lamont-Brown |first=Raymond
 |title = Humphry Davy, Life Beyond the Lamp|location= Stroud|publisher = Sutton Publishing
 |year = 2004
 |isbn= 978-0-7509-3231-8
}}
*{{cite book
 |last=Partington |first=J. R.
 |title = History of Chemistry |volume=4|location= London|publisher = Macmillan
 |year = 1964
 |pages=29–76
}}
*{{cite book
 |last=Treneer |first=Anne
 |title = The Mercurial Chemist: a Life of Sir Humphry Davy
 |location = London|publisher = Methuen
 |year = 1963
}}

==External links==
*{{cite book
 |title = Dawnings of Genius
 |chapter = Sir Humphrey Davy
 |location = London|publisher = Charles Knight and Company
 |year = 1841
 |chapter-url = https://books.google.com/books?id=C0sppZofUHAC&pg=PA12
}} (Davy's first name is spelled incorrectly in this book.)
* {{Gutenberg author |id=Davy,+Humphry,+Sir | name=Humphry Davy}}
* {{Internet Archive author |sname=Humphry Davy |sopt=t}}
*[https://archive.org/details/collectedworkss02davygoog ''The Collected Works of Humphry Davy'']
*[https://archive.org/details/journaloftourmad00tobi ''Journal of a Tour made in the years 1828, 1829, through Styria, Carniola, and Italy, whilst accompanying the late Sir Humphry Davy''] by J. J. Tobin (1832)
*[https://archive.org/details/humphrydavypoet01thorgoog ''Humphry Davy, Poet and Philosopher''] by Thomas Edward Thorpe, New York: Macmillan, 1896
*[https://archive.org/details/younghumphrydavy0000full ''Young Humphry Davy: The Making of an Experimental Chemist''] by June Z. Fullmer, Philadelphia: American Philosophical Society, 2000
*{{UK National Archives ID}}

{{s-start}}
{{s-new|creation}}
{{s-ttl|title=Baronet<br />'''(of Grosvenor Street)'''|years=1818–1829}}
{{s-non|reason=Extinct}}
{{s-break}}
{{s-npo|pro}}
{{s-bef|before=[[Biography:William Hyde Wollaston|William Hyde Wollaston]]}}
{{s-ttl|order=23rd|title=President of the Royal Society|years=1820–1827}}
{{s-aft|after=Davies Gilbert}}
{{s-end}}

{{Royal Society presidents 1800s}}
{{Copley Medallists 1801-1850}}


{{DEFAULTSORT:Davy, Humphry}}
[[Category:Discoverers of chemical elements]]
[[Category:Calcium]]
[[Category:Sodium]]
[[Category:Potassium]]
[[Category:Magnesium]]
[[Category:Boron]]

{{Sourceattribution|Humphry Davy}}