, /<*>; 



THE 



BIOLOGY OF THE FROG 



BY 



SAMUEL J. HOLMES, PH.D. 



ASSISTANT PROFESSOR OF ZOOLOGY IN THE UNIVERSITY 



OF WISCONSIN 





THIRD 



EDITION 









Nefo 

 THE MACMILLAN COMPANY 



LONDON: MACMILLAN & CO., LTD. 

 1924 



All rights 'reserved 



