Batrachian Study 



187 



15 



16 



>J^ 



11 



13 



10 



12 



X ' \ 

 I * * 





/ 



development in a single season (/poj). 



1-18, Changes and growth from April to November 9-14, Different sizes, July 30, 1903 

 1-13 Development in 25 to 60 days 15-18 Different sizes, October 21, 1903 



10, 11, The same tadpole, 11 is 47 hours olderthan 10 

 12, 13, The same tadpole, 13 is 47 hours older than 12 

 Photo by S. H. Gage. 



