BIOLOGICAL BULLETIN 



OF THE 



fiDarine Biological Xaboraton? 



WOODS HOLL, MASS. 



Vol. XIII 



September, 1907 



No. 4 



CONTENTS 



Page 



Studies on the Relation between 

 Amitosis and Mitosis, IV— VI. . . 165 



On Certain Modified Hairs Pecu- 



lia r to the Ants of A rid R egio ns 1 S 5 



Can Sea Water Mai?itain the 

 Beat of the Heart of Fresh 

 Water Animals ? , 203 



On the Relationship of the Fishes 

 of the Family Siganidce . . 211 



The Fertilizatiojz of Amoeba pro- 

 teus 219 



Child, C. M. 



Wheeler, William M. 



Burnett, Theo. C. 



Starks, Edwin Chapin. 



Calkins, Gary N. 



Published Monthly by the 

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