A TEXT BOOK 



OF 



PHYSIOLOGY 



M. FOSTER, M.A., M.D, LL.D., F.RS., 



PROFESSOR OF PHYSIOLOGY IN THE UNIVERSITY OF CAMBRIDGE, 

 AND FELLOW OF TRINITY COLLEGE, CAMBRIDGE. 



WITH ILLUSTRATIONS. 



FIFTH EDITION, LARGELY REVISED. 



PART III. 



The Central Nervous System. 



Uon&on : 

 MACMILLAN AND CO. 



AND NEW YORK. 

 1890 



[The Riylit of Translation is reserved.'] 

 TODBOIsTTO, 



VANNEVAR & CO, 



440 YONGE STREET. 



