Batrachian Study 



187 



Toad development in a single season (iQoj). 

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

 1-13 Development m 25 to 60 days 15-18 DUlerent sizes, October 21. 1903 



10 . 1 1 . The same tadpole, 1 1 is 47 hours older than 10 

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

 Photo by S. H. Gage. 



