THE PHYSIOLOGY 

 OF REPRODUCTION 



BY 



FRANCIS H. A. MARSHALL 



Sc.D. (CAMB.), D.Sc. (Edin.), F.R.S. 



FELLOW OF Christ's college, and reader in agricultural physiology 



IN THE UNIVERSITY OF CAMBRIDGE 



WITH CONTRIBUTIONS BY 



WILLIAM CRAMER, Ph.D., D.Sc, M.R.C.S., L.R.cip. 

 JAMES LQCHHEAD, O.B.E., M.A., M.D., F.R.C.S.E. 



AND 



CRESSWELL SHEARER, M.D., Sc.D., F.R.S. 



SECOND AND REVISED EDITION 



LONGMANS, GREEN, AND CO. 



39 PATERNOSTER ROW, LONDON, E.C.4 



NEW YORK, TORONTO 



BOMBAY, CALCUTTA, AND MADRAS 



1922 



All rights reserved 



