DAVY, HUMPHRY.

An Account of some new Experiments on the fluoric Compounds; with some Observations on other Objects of Chemical Inquiry. Read February 13, 1814. (+) Some Experiments and Observations on a new Substance which becomes a violet coloured Gas by heat. Read January 20, 1814.

(London, W. Bulmer and Co., 1814). 4to. 4to. No wrappers as extracted from "Philosophical Transactions" 1814 - Part I. Pp. 62-73 a. pp. 74-93.

First appearance of two importent papers i chemical analysis.. The first contains accounts of the 'combining proportion' of fluorine and the efforts to isolate the radical he called fluorine after a suggestion by Ampere. "It also contains experiments and remarks on the elementary nature of chlorine, and Davy used Gay-Lussac's law of volumes in correcting the experimentaælresults."(Partington IV, pp. 58 ff).

"Humphry Davy was one of the most brilliant chemists of the early nineteenth century. His early study of nitrous oxide brought him his first reputation, but his later and most importent investigations were devoted to electrochemistry. Following Galvani's experiments and the discovery of the voltaic pile, interest in galvanic electricity had become widespread. The first electrolysis by means of the pile was carried out in 1800 by Nicholson and Carisle, who obtained oxygen and hydrogen from water. Davy began to examine the chemical effects of electricity in 1800, and his numerous discoveries were presented in his Bakerian lectures."

Another notable paper comes together with avy's papers: THOMAS BRANDE "The Bakerian Lecture: on some new Electro-chemical Phenomena. Read November 25, 1813." Pp. 51-61 a. 1 engraved plate showing the experimental apparatus used.

Order-nr.: 44175