Glaessner (Klin. Woch. 1925, No. 34), investigating the effect on gastric secretion of parenteral administration of chemical and bacterial products (nuclein, typhoid and gonococcal vaccines, various tuberculins, etc.), established their different effects on the stomach. Especially the typhoid vaccine and tuberculins have the ability to reduce the secretion of hydrochloric acid and gastric acid enzymes. The author considers it possible to use this in the therapy of hyperaciditas.