CONTENTS 



1914 



No. 1. MARCH 



H. V. Neal. The morphology of the eye muscle nerves. Nine plates and 



four text figures 1 



No 2. JUNE 



Cora J. Beckwith. The genesis of the plasma-structure in the egg of 



Hydractinia echinata. Sixty-six figures (eight plates) 189 



H. J. VanCleave. Studies on cell constancy in the genus Eorhynchus. 



Forty-six figures 253 



James E. Ackert. The innervation of the integument of Chiroptera. 



Four plates 301 



George A. Bates. The pronephric duct in elasmobranchs. Sixty-one 



figures (five plates) 345 



No. 3. SEPTEMBER 



Robert W. Hegner. Studies on germ cells. I. The history of the germ 

 cells in insects with special reference to the Keimbahn-determinants in 

 animals. Seventy-four figures 375 



P. E. Smith. Some features in the development of the central nervous 



system of Desmognathus fusca. Fifty -eight figures 511 



iii 



