The use of chemically induced convulsive therapy introduced by Von Meduna in 1934 was followed by the introduction of electric convulsive therapy by Cerletti and Bini in 1937. The latter method is now of almost universal use. The main reasons for the change over were the elimination of the unpleasant aura experienced in connection with the leptazol fit and the fact that body accidents were said to be less frequent with E.C.T. There does not appear to be any evidence of greater therapeutic efficiency with E.C.T. Bini and Bazzi (1949) in summarizing statistics covering twelve thousand cases, found no difference in the remission rates in the two therapies. Dedichen (1946) indicated that the value of the two therapies in depressions was similar and Ross (1946) found this also for cases of acute excitements.