BIOLOGICAL BULLETIN 



flDarine Biological Xaborator^^ 



WOODS HOLE, MASS. 



Vol. XXVIII January, 1915 No, i 



CONTENTS 



PAGE 



Just, E . E . Initiatio7t of Development in Nereis i 



LiLLiE, Frank R. Sperm Agglutination and Fertilization i8 



WiEMAN, H. L. Observations on the Spermatogenesis of the 



Gall- Ply ^ Dryophanta erinacei ( Mayr) 34 



SwEZY, Oli\"E P^g Albumen as a Culttire Aledium for 



Chick Tisstie 47 



Werber, E. I. The Influence of Products of Pathologic 



Metabolism on the Developing Teleost Oviun 5 1 



Published Monthly by the 

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