Experiments are described which show that:
1. Transient albuminuria follows the infusion of small doses of adrenalin into rabbits, if prolonged over several minutes.
2. Agents causing renal vasoconstriction also cause transient albuminuria in anesthetized, eviscerated dogs.
3. Cats eliminate albumin after having been frightened or enraged.
4. The drug ephedrine, which commonly causes renal vasoconstriction in animals, has been tested in man. Transient albuminuria