“…Gibson (6) Concerning the metabolic data obtained, the most striking feature is that none of the treatments instituted had any marked beneficial effect except the parathyroid extract, given either alone or combined with calcium chloride. Cod liver oil, the effective remedy for infantile tetany and the type of tetany in adolescent girls reported in the first paper (1), failed entirely in this case. There was no alleviation of symptoms, nor was there any increase in blood calcium or retention of calcium.…”