BIOLOGICAL BULLETIN 



fiDarine Biological Xaborator^ 



WOODS HOLL, MASS. 



Vol. XIV January, 1908 No. 2 



CONTENTS 



Page 



Rice, Edward L. Gill Development in Mytilus. 61 



McGill, Caroline. The Effect of Loxv Tempera- 

 tures on Hydra 7S 



Marshall, Wm, S. Amitosis in the JMalpighian 



Tubules of the Walk i?tg- stick 

 (Diapheromera femorata).. . S9 



IIargitt, Ciias. W. Notes on a Eetv Coelenterates of 



Woods Hoi I:. 95 



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