Paris, L'Imprimerie Royale, 1756. 4to. Without wrappers. Extracted from "Mémoires de l'Academie des Sciences. Année 1752". Pp. 266-307 a. pp. 461-495. Both papers clean and fine.
First printing of these importent papers in the physiology of digestion as reaumur here for the first time isolated the gastric juice and demonstrated its solvent effects upon foods. To the experiments he used a pet kite by putting a sponge into the stomach attached to a string that he could withdraw. These results were ably confirmed and extended by the work of Lazaro Spallanzani.
Garrison & Morton No 979.