No. 5.] SOME INTERESTING EGG MONSTROSITIES. 229 



while ordinarily the opposite is the case.^ That there is no 

 insuperable difficulty in the matter, however, and that such is 

 not invariably the case, I think is evident. I have discovered 

 during these observations several cases in which normal eggs 

 have shown evidence of such reversed descent, having upon the 

 small ends of the egg-shell a vermian-like coil of indurated shell 

 substance, apparently produced as a sort of concluding deposit 

 from the shell glands strung out upon the descending Q.gg. 



Syracuse University, December, 1897. 



Since the above was in type a similar case in some respects was sub- 

 mitted by Prof. F. H. Herrick before the Morphological Society, an abstract 

 of which appeared in Science of March 10, 1899. The rather distinctive 

 feature of this was that the small, or inner, &gg was included within the yolk 

 of the larger. This would seem quite unusual, so far as my own inquiries 

 have gone, at any rate, and would hardly be open to a similar explanation. . 



C. W. H. 



^ Foster and Balfour, Embryology., p. 17. 



