BROTHER POTAMIAN, F.S.C., D.SC., Lond. PROFESSOR OF PHYSICS IN MANHATTAN COLLEGE, N. Y. JAMES J. WALSH, M. D., PH.D., LL.D. DEAN AND PROFESSOR OF NERVOUS DISEASES AND OF THE HISTORY OF MEDICINE AT FORDHAM UNIVERSITY SCHOOL OF MEDICINE; PROFESSOR OF PHYSIOLOGICAL PSYCHOLOGY AT THE CATHEDRAL COLLEGE, NEW YORK…
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