THE BEHAVIOR OF PIGEONS 



POSTHUMOUS WORKS OF CHARLES OTIS WHITMAN 



PROFESSOR OF ZOOLOGY IN THE UNIVERSITY OF CHICAGO, 1892-1910; DIRECTOR OF MAR INK 

 BIOLOGICAL LABORATORY AT WOODS IIOLK, 1888-1908 



VOLUME III 



EDITED BY 



HARVEY A. CARR, PH.D. 



ASSOCIATE PROFESSOR OF PSYCHOLOGY AT THE UNIVERSITY OF CHICAGO 



WITH A PREFACE BY OSCAR RIDDLE 



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PUBLISHED BY 

 THE CARNEGIE INSTITUTION OF WASHINGTON 



WASHINGTON, 1919 



