*r77> fa/ 

 3 



MONOGRAPHS ON EXPERIMENTAL BIOLOGY 



FORCED MOVEMENTS, 



TROPISMS, AND ANIMAL 



CONDUCT 



BY 



JACQUES LOEB, M.D., PH.D., Sc.D. 



MEMBER OF THE ROCKEFELLER INSTITUTE FOR MEDICAL RESEARCH 



PHILADELPHIA AND LONDON 

 J. B. LIPPINCOTT COMPANY 



