Report U. S. F. C. 1 898. (To face page LXXII.j 



Plate XVI. 



19. Double-headed whitefish fry just hatched. 



20. Double-headed whitefish fry. 



21 . Curved spine, a common deformity of whitefish fry. 22. Whitefish fry just hatched, three-eyed, curved spine 



23. A common deformity of whitefish fry. 24 Four-eyed whitefish fry. 



DEVELOPMENT OF THE WHITEFISH EMBRYO. 



