ADRENALIN (Adrenine, Epinephrine or Hemieine) is ob tained from the medulla of the suprarenal glands of animals, duct less glands situated immediately above each kidney. Its chief action is upon the heart and small arteries. The heart is some what slowed, but the force of its contractions is increased and the arteries are constricted, thus causing a considerable rise in the general blood pressure. An aqueous solution (r part in i,000) is a very efficient haemostatic and may be used together with co caine for painless, bloodless operations on the eyes, teeth, etc. Adrenalin is one of the most efficacious drugs for stopping a paroxysm of asthma. (See HORMONES ; SUPRARENAL EXTRACT.)