U . O. D 



Fig. 27.— Curved s|)ine, a common deformity of 

 whitefish fry. 



Fig. 28.— WluLelijh liy just hatched, tliree-eyed, 

 curved spine. 



Fig. 29.— a common deformity of whitefish fry. Fig. 30.— Four-eyed whitefish fry. 



DEVELOPMENT OF THE WHITEFISH EMBRYO. 



