Produced by Juliet Sutherland, Michael Oltz, Charles Franks and the Online Distributed Proofreading Team. THE ANIMAL BEHAVIOR SERIES. VOLUME I THE DANCING MOUSE A Study in Animal Behavior BY ROBERT M. YERKES, Ph.D. INSTRUCTOR IN COMPARATIVE PSYCHOLOGY IN HARVARD UNIVERSITY The Cartwright Prize of the Alumni Association of the College of Physicians and Surgeons, Columbia