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from artificial manures chemically prepared with sulphuric acid in which it was not usual to have arsenic as an impurity. Testing the growth of plants, he found "that arsenic might be taken up in considerable quantities by plants without destroying their vitality, or appearing even to interfere with
207:
on the hulls of Navy vessels. (The method was shortly discontinued because of an unfortunate side effect - the speed of the ships was reduced by increased fouling by marine life. The protective method reduced the release of copper ions that had otherwise poisoned the organisms and controlled their
178:
for 1835 he was the first to publish a series of experiments investigating the protective power of zinc employed in simple contact and in massive form. Shortly thereafter a French engineer, M. Sorel, secured a patent for a process of coating an iron surface with fluid zinc to protect against rust,
138:
and air. In another such experiment, in 1820, he found that with the platinum, alcohol vapours were converted to acetic acid. (Humphry Davy had discovered a few years earlier that a hot platinum wire lit up in a mixture of coal gas and air.) This release of energy from oxidation of the compounds,
108:
Edmund
William Davy (born in 1826), son of Edmund Davy, became professor of medicine in the Royal College, Dublin, in 1870. That they cooperated in research is shown in a notice to the Royal Irish Academy on the manufacture of sulphuric acid which Edmund Davy ends with an acknowledgement of the
268:
at
Bristol, Davy anticipated the value of acetylene as an illuminating gas: "From the brilliance with which the new gas burns in contact with the atmosphere it is, in the opinion of the author, admirably adapted for the purpose of artificial light, if it can be procured at a cheap rate."
228:
the salts of various metallic poisons from a prepared solution. The method was valuable because the result was not affected by the presence of organic matter from the contents of the stomach. When used as a test, Davy claimed that the presence of only 1/2500th part of a grain of
187:
had long before been issued, on 26 September 1791 to Madame Leroi de
Jancourt for the protection of metals with a coating of an alloy of zinc, bismuth and tin (though without a knowledge of the chemical principles involved).
93:
and saw the minute globules of the quicksilver-like metal burst through the crust and take fire, Edmund described that his cousin was so delighted with this achievement that he danced about the room in ecstasy.
505:
Humphry Davy. Some New
Experiments and Observations on the Combustion of Gaseous Mixtures; with an Account of a Method of Preserving a Continued Light in Mixtures of Inflammable Gases and Air without Flame.
402:, Vol. 54, No. 2. (Jun., 1963), p.248 gives as footnote 5: "Humphry's brother John reported the story from an account by their cousin Edmund Davy, who was at the time Humphry's assistant. John Davy (ed.),
101:, (24 May 1790 – 24 Jan 1868) also was a chemist who spent some time (1808–1811) assisting Humphry in his chemistry research at the Royal Institution. John was the first to prepare and name
492:
324:, and that with continued consumption the "substance may collect in the system till its amount may exercise an injurious effect on the health of men and animals."
553:
Edmund Davy. On a Simple
Electro-Chemical Method of Ascertaining the Presence of Different Metals; Applied to Detect Minute Quantities of Metallic Poisons,
241:
In 1836, Edmund Davy discovered a gas which he recognised as "a new carburet of hydrogen." It was an accidental discovery while attempting to isolate
134:
gas. Further, Edmund Davy discovered that even at room temperature, finely divided platinum would light up from heat in the presence of a mixture of
245:
metal. By heating potassium carbonate with carbon at very high temperatures, he produced a residue of what is now known as potassium carbide, (K
81:, and lived there throughout his teen years. He moved to London in 1804 to spend eight years as operator and assistant to Humphry Davy in the
710:
436:
415:
American
Council of Learned Societies. Dictionary of Scientific Biography, Charles Scribner's Sons, New York, 1981, Vol. 3, p.604.
345:
296:. In some of his own lectures at the Royal Dublin Society, Davy showed his special interest in the applications of chemistry in
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Henry
Enfield Roscoe and Carl Schorlemmer. A Treatise on Chemistry, D. Appleton and Co., 1833, p.614 which gives the reference
705:
541:
528:
Massachusetts State Board of Heath. The Use of Zinced or
Galvanized Iron for the Storage and Conveyance of Drinking-Water,
670:
306:
An Essay on the Use of Peat or Turf as a Means of
Promoting Public Health and the Agriculture of the United Kingdom
292:
Davy was active in promoting scientific knowledge, whereby popular courses of lectures were established throughout
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An account of some
Experiments made to determine the relative deodorizing Powers of Peat-charcoal, Peat, and Lime
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89:'s mineralogical collection. When, in October 1807, Humphry accomplished the electrolytic preparation of
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laboratory, which he kept in order. For a large part of that time, Edmund was also superintendent of the
19:
467:
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685:
680:
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Robert Siegfried. The Discovery of Potassium and Sodium, and the Problem of the Chemical Elements,
220:, as a test of the presence of poisonous substances in cases of suspected poisoning. He applied a
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Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London,
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349:
471:
216:
Edmund Davy made a series of experiments to detect the presence of metallic poisons by means of
27:
519:
Philip A. Schweitzer. Corrosion and Corrosion Protection Handbook, Marcel Dekker, 1997, p.34.
544:. Dictionary of Scientific Biography, Charles Scribner's Sons, New York, 1981, Vol. 3, p.603
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later prepared this in a purer form able to absorb up to 250 times its volume of
109:
assistance he received in his experiments given by his son, Edmund William Davy.
253:), which reacted with water to release the new gas. (A similar reaction between
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425:
353:
127:
86:
195:, an electrochemical technique developed in 1824 by Humphry Davy to prevent
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without flame, and without change in the platinum itself, was a sign of the
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A summary in the article "Scientific Intelligence, Botany and Zoology,"
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1859, Vol. XXVIII., p.443-444 gives that the paper is published in the
440:. Vol. 7 (11th ed.). Cambridge University Press. p. 871.
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their proper functions." He understood that arsenic was a cumulative
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Smith, Elder and Co., London, 1839-1840, 9 volumes. Vol. I, p.109. "
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and water was subsequently widely used for the manufacture of
183:. Davy claimed priority of discovery, but it was found that a
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Philosophical Transactions of the Royal Society of London,
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Philosophical Transactions of the Royal Society of London
389:, Charles Scribner's Sons, New York, 1981, Vol. 2, p.67.
373:, Smith, Elder & Co., London, 1888, Vol. XIV, p.185.
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Edmund Davy was the first to discover a spongy form of
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London, Dublin, and Edinburgh Philosophical Magazine,
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and chemical aids useful to farmers. These included "
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470:, 1997, p.76 which gives the reference: J. Liebig, "
344:
Christopher F. Lindsey, 'Davy, Edmund (1785–1857)’,
450:Edmund Davy. On the Manufacture of Sulphuric Acid,
179:and the technique was adopted by manufacturers of
662:
280:compound in 1860, for which he coined the name "
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490:Edmund Davy. On Some Combinations of Platinum,
472:Ăśber Edmund Davy's schwarzen Platinniederschlag
454:M.H. Gill, Dublin, 1850, Vol. IV., pp.297-299
73:Edmund, the son of William Davy, was born in
22:(1785 – 5 November 1857) was a professor of
465:Justus Von Liebig: The Chemical Gatekeeper,
287:
155:In 1829, Edmund Davy found that the use of
143:property of platinum investigated later by
126:with remarkable gas absorptive properties.
315:He also studied the uptake of arsenic by
300:. He published several papers concerning
203:should attach iron blocks to protect the
424:
404:The Collected Works of Sir Humphry Davy,
53:
42:. He was also an original member of the
632:Russell, Justin (1953). "Edmund Davy".
581:Public Lighting by Gas and Electricity,
452:Proceedings of the Royal Irish Academy,
385:American Council of Learned Societies.
346:Oxford Dictionary of National Biography
663:
431:"Davy, Sir Humphry (footnote:1)"
340:
338:
336:
66:, the famous chemist who invented the
542:American Council of Learned Societies
381:
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579:William Joseph Dibdin. "Acetylene,"
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97:Humphry Davy's younger brother, Dr.
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211:
13:
711:Members of the Royal Irish Academy
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387:Dictionary of Scientific Biography
376:
358:
272:Thereafter it was forgotten until
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14:
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510:Vol. 2. (1815 - 1830), pp. 61-62.
176:Report of the British Association
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496:, Vol. 110. (1820), pp. 108-125.
371:Dictionary of National Biography
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573:
568:Reports of British Association,
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199:. He had recommended that the
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634:Journal of Chemical Education
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706:Fellows of the Royal Society
557:Vol. 121 (1831), pp. 147-164
264:In the paper he read to the
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150:
7:
595:American Journal of Science
38:, as it was later named by
10:
737:
468:Cambridge University Press
70:for the safety of miners.
34:from 1826. He discovered
671:Scientists from Cornwall
288:Chemistry in agriculture
437:Encyclopædia Britannica
350:Oxford University Press
463:William Hodson Brock.
369:Leslie Stephen (Ed.).
191:This is an example of
46:, and a member of the
28:Royal Cork Institution
354:accessed 6 April 2008
233:could be discovered.
159:blocks would prevent
54:Family and early life
30:from 1813 and at the
701:People from Penzance
147:and other chemists.
32:Royal Dublin Society
646:1953JChEd..30..302R
530:Fifth Annual Report
274:Marcellin Berthelot
266:British Association
193:cathodic protection
48:Royal Irish Academy
40:Marcellin Berthelot
676:English scientists
583:Chap. XXIX, p.489.
532:, Jan 1874, p.490.
481:17 (1829), 101-14.
478:Annalen der Physik
276:rediscovered this
224:of electricity to
197:galvanic corrosion
58:Edmund Davy was a
654:10.1021/ed030p302
603:Aug. 1859, p.108.
145:Johann Döbereiner
113:Major discoveries
83:Royal Institution
728:
716:Industrial gases
686:Science teachers
681:English chemists
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64:Humphry Davy
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721:Davy family
696:1857 deaths
691:1785 births
570:1836, p.62.
298:agriculture
278:hydrocarbon
226:precipitate
218:electricity
17:Edmund Davy
665:Categories
328:References
312:" (1856).
282:acetylene
259:acetylene
243:potassium
237:Acetylene
208:growth.)
201:Admiralty
161:corrosion
151:Corrosion
141:catalytic
99:John Davy
91:potassium
68:Davy lamp
36:acetylene
24:chemistry
136:coal gas
124:platinum
103:phosgene
79:Cornwall
75:Penzance
642:Bibcode
352:, 2004
302:manures
294:Ireland
231:arsenic
222:current
174:In the
163:of the
26:at the
322:poison
185:patent
132:oxygen
60:cousin
317:crops
169:buoys
105:gas.
400:Isis
165:iron
157:zinc
650:doi
474:,"
284:."
261:.)
62:of
20:FRS
667::
648:.
638:30
636:.
434:.
378:^
360:^
348:,
335:^
171:.
77:,
50:.
656:.
652::
644::
597:,
251:2
249:C
247:2
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