Autodigestion has been a matter of research for nearly fifty years among physiological chemists. The original meaning of the term as given by Jacoby (1), who carried on the work started by Hofmeister in the latter part of the Nineteenth Century, is still accepted by workers. Jacoby gave the name, "Autolysis" to the process and has shown that the enzymes taking part in this action do not come from the digestive tract and are not pepsin or trypsin taken up by the cells. He designates as an4tolysis all enzyme actions which take place in the removed organs or fluids 'without the aid of microorganisms, but processes that occur intra vitam under certain conditions".