Abstract
From the suprarenal capsules of cats, which were killed at once without narcotizing, the cortical tissue was separated mechanically from the medullary, all the tissue being congealed with liquid nitrogen. Therefrom an extract was made by means of the Folin, Cannon and Denis method, and its epinephrine was estimated by that method, the Suto-Kojima method, applied as the present writer described elsewhere, and the rabbit intestine segment method.
The Folin method of determination gave about the same figure as Hartman and Hartman reported, but it does never afford any evi-dence that the cortex contains epinephrine. Generally speaking, the cortex of the cat's suprarenal body contains a substance which gives a positive reaction to the Folin method, but not the epinephrine. The present paper is only to add the name of cat to the fact well established by the previous experimentalists on some other kinds of animals, such as rabbits, cattle, pigs, etc.
