“Amylopsin, or pancreatic diastase, which, according to Korowin and Zweifel, is not found in new-born infants and does not appear until more than one month after birth, seems, although not identical with ptyalin, to be closely related to it. Amylopsin acts very energetically upon boiled starch, and according to Kuhne also upon unboiled starch, especially at 37° to 40° C. [98.6 to 104° F.], and according to Vernon, best at 35° C. [95° F.].”