DAVY, HUMPHRY - THE DISCOVERY OF POTASSIUM AND SODIUM (FRENCH VERSION).

Recherches ëlectrochimiques sur la décomposition des terres, avec des observations sur les métaux obtenus des terres alcalines, et sur un amalgame produit avec l'ammoniaque. Tireeis des Transactions philosophiques, et traduites par M. C.A. Prieur. (+) Suite des Recherches électrochimiques...

Paris, Mad. Ve Barnard, 1809. Contemp. hcalf. Spine gilt. Wear to top of spine. A few scratches to binding. Small stamps on verso of titlepage.In: "Annales de Chimie, ou Recueil de Mémoires concernant la Chemie" Tome 70. 336 pp. (Entire volume offered). Davy's paper: pp. 189-254.

First edition in French (the first English 1808) of this importent historical paper in chemistry, in which Davy shows that electricity is capable of decomposing some alkalies, isolating two new substances and discovering potassium and sodium.
Neville in his Historical Chemical Library vol. I, p.340, writes about this paper "ONE OF THE GREAT CLASSIC RESEARCHES IN CHEMISTRY, in which Davy announced in this, his second Bakterian lecture, the isloation of metallic potassium and sodium by the electrolytic decomposition of their fused oxides."

"He (Davy) began his own electrical experiments...The results were spectacular. On October 6, 1807, the current passing through molten potash liberated a metal, which Davy called potassium. The little globules of shining metal tore the water molecule apart as it eagerly recombined with oxygen and the liberated hydrogen burst into lavender flame. Davy danced about in a delirium of joy. A week later he isolated sodium from soda."(Asimow). The paper offered here describes these discoveries.

"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 lecture to the Royal Society on November 20, 1806. (A Source Book in Chemistry p. 243).

Order-nr.: 50198