Note 14 — Chapter VIII

Up to the present, certain animal substances have been considered chemically identical, which are not so: 1, the proper matter of gelatinous tissues not decomposed; 2, the product which results from their decomposition by the action of heat and water; 3, this same secondary product dried. These three compounds were designated by the denomination of gelatine. As I have proved that there is not between them any identity of character, I have named gelatine the animal matter contained in the gelatinous tissues; I have reserved the name jelly to the product of the decomposition of geline, and I have left the name gelatine to glue, whatever may be its purity.