3^ Series, Vol VW. 



Plate III 



^^^KeS5*». 





I 



jSi 



^ 



X 



-pi- 



rn/ 





4 



14(?) 





15 (2) 



Dr. Alcock; u On the Development of the Common Frog" 



Memoirs, Manchester Literary and PhU-osophwal Society. 



