Note 24 — Chapter II

Verworn, General Physiology, pp. 102, 478: “Physiological chemistry has shown that between the two kinds of substance very essential chemical differences exist, which prove that living substance experiences in dying pronounced chemical changes. A widespread difference between the two consists in their reaction. The reaction of living substance is almost without exception alkaline or neutral, and with death changes usually to acid.... Physiological chemistry has shown similar changes in death in great number. All these facts prove that in the death of living cell-substance certain chemical compounds undergo transformations; hence substances exist in it which are not to be found in dead cell-substance.”