THE JOURNAL OF EXPERIMENTAL ZOOLOGY 

 Contents of the Brooks Memorial Volume 



E. A. ANDREWS 



Zoological Department, Johns Hopkins University 



Conjugation in the crayfish, Cambarus affinus. Eight figures. 

 ROBERT PAYNE BIGELOW 



Massachusetts Institute of Technology 



A comparison of the sense organs in medusae of the family Pelagidae. 



Thirty-eight figures. 

 HUBERT LYMAN CLARK 



Museum of Comparative Zoology, Harvard University 



The development of an apodous holothurian (Chiridota rotifera). Six 



figures. 

 EDWIN G. CONKLIN 



Department of Biology, Princeton University 



The effects of centrifugal force upon the organization and development of 



the eggs of fresh water pulmonates. Forty-four figures. 

 R. P. COWLES 



Department of Biology, Johns Hopkins University 



Stimuli produced by light and by contact with solid walls as factors in 



the behavior of orphiuroids. Thirteen figures. 

 OTTO C. GLASER 



Zoological Department, University of Michigan 

 The nematocysts of Solids. Twelve figures. 

 SEITARO GOTO 



Zoological Department, Imperial University, Tokyo 



On two species of Hydractinia living in symbiosis with a hermit crab. 



Twenty-three figures. 

 CHARLES WILSON GREENE 

 University of Missouri 



An experimental determination of the speed of migration of salmon in 



the Columbia river. Two figures. 

 ROSS GRANVILLE HARRISON 

 Yale University 



The outgrowth of the nerve fiber as a mode of protoplasmic movement. 



Three plates and three figures. 

 FRANCIS H. HERRICK 

 Adelbert College 



Life and behavior of the cuckoo. Seven plates and three figures. 

 H. S. JENNINGS 



Zoological Department, Johns Hopkins University 



What conditions induce conjugation in Paramecium? Four figures. 

 DUNCAN S. JOHNSON 



Johns Hopkins University 



Studies in the development of the Piperacese. Seventy-one figures. 



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