Three different kinds of experiments were done. (1) Batteries were placed in the digestive fluid. Electrolysis occurred and fluid around the cathode was strongly alkalized. (2) Batteries were placed on the surface of the mucous membrane of stomach of rabbits and frogs. Ulceration of mucous membrane around the cathode developed in about an hour. It took about 24 hours for battery to collapse and to cause alkali leakage. (3) Electorical resistance of the tissue was measured and which ranged 100-500K ohm. Electorical resistance of digestive fluid was 8K ohm. Electorically induced tissue damage was negligible. In conclusion, alkalized fluid secondary to electrolysis around the cathode was the primary cause of tissue damage.
