^91. /aft 



THE BRAIN 



FROM APE TO MAN 



A CONTRIBUTION TO THE STUDY OF THE EVOLUTION 

 AND DEVELOPMENT OF THE HUMAN BRAIN 



BY FREDERICK TILNEY, ph.d.,m.d. 



Trofesstir of NeuroloRV. Columbia University 



With Chapters on the Reconstruction of the Gray 

 Matter in the Primate Brain Stem by 



HENRY ALSOP RILEY, a.m.,m.d. 



Associate Professor of Neurology, Columbia University 



foreword by 

 HENRY FAIRFIELD OSBORN, sc.d.,ll.d. 



Research Professor of Zoology, Columbia University 



557 illustrations, many in color 

 VOLUME TWO 



PAUL B • HOEBER • I^c 



NEW YORK ' MCMXXVIII 



