7 2- 



BIOLOGICAL TIME 



By 

 P.LECOMTE DU NOUY 



Chief of the Division of Molecular Biophysics, 



Pasteur Institute, Paris; formerly Associate 



Member of the Rockefeller Institute 



With Foreword by 



ALEXIS CARREL, M.D. 



Rockefeller Institute for Medical Research 

 Author of "Man the Unknown" 



New York 

 THE MACMILLAN COMPANY 



1937 



