Abstract
Effect of histamine upon the blood pressure in the rabbits long surviving double suprarenalectomy was compared with that in the normal. No narcosis was resorted to at all. The usual response was the decrease in both sets of animals, normal and decapsulated; seldom a transitory elevation occurred before the onest of the decrease, but in both the sets. No alteration was thus noted in the vascular response by removal of the suprarenals, as decrease before removal and rise after. Only the minimum effective dose appeared a little small in the decapsulated.
