BERNARD, CLAUDE. - DEMONSTRATING THE FIRST PHASE OF FAT METABOLISM.

Recherches sur les Usages du Suc Pancreatique dans la Digestion.

Paris, Victor Masson, 1849. 8vo. Contemp. hcalf, raised bands, gilt spine. Light wear along edges. Small stamps on verso of titlepage. In: "Annales de Chimie et de Physique", 3e Series - Tome 25. 512 pp. a. 2 folded engraved plates. Small stamp to verso of plates. (The entire volume offered). Bernard's paper: pp. 474-484. First part of the volume with some scattered brownspots.

This paper describes the discovery of the digestive action of the pancreatic juice in the first phase of of fat metabolism. The paper was published in 3 journals at the same time, and was later in 1856 expanded into a book.

"Bernard's most impressive discoveries in the field of digestion proper concerns the function of the pancreas, especially the importence of pancreatic juice in the digestion and absorption of fats..."(DSB II, p. 28).
Garrison & Morton No 996.

The volume contains another famous and importent paper: EDMOND BECQUEREL. "De L'Image colorrées obtenues à la chambre obscure." Pp.447-474.
"The results of the investigations of Edmund Becquerel on photochromy, surpassed all those preceding them. He prepared his sensitive film by polishing a silver plate and immersing it in a metal perchloride solution or in chlorine water; a violent film of silver subchloride formed, which under the influence of colored glass or of the spectrum takes on the impression received and which retains this color photograph as long as subsequent light action is avoided....Niepce de Saint-Victor devoted himself from 1851 to 1866 to Becquerel's method of heliochromy with chlorinated silver plates, improved the process, and obtained more brilliant and more vivid colors than those of his predecessor."(Eder "History of Photography", p. 664).

Order-nr.: 43593