The purpose of this experiment has been, in the first place, to bring about improvement in certain patients who were responding insufficiently or not at all to psychotherapy, by the use of this drug for which claims have been made that it is of value in the therapy of some anxiety states, such as those characterized by tension; and in the second place to gain by experience an understanding of how much we are justified in expecting from its use. Within the limited series of eleven patients so far treated, results have been sufficiently encouraging to make us wish to continue.