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MARINE BtOLOGlCAL 

 WOODS HOL^jJiAi?^ 



691 



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2-^ OCT 101 



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 5itive Action of the i;r»ntmii liax^nn llegenerationin Planarians. 



191 



No. 2.— August, 1904. 

 Edmund B. Wilson, 



Experimental Studies on Germinal Localization. II. Experiments on the 

 Cleavage-Mosaic in Patella and Dentaliimi. With 118 figures 197 



A. J. Carlson, 



Contributions to the Physiology of the Ventral Nerve Cord of Myriapoda 

 (Centipedes and Millipedes) . With 6 figures 269 



Frank W. Bancroft, 



Note on the Galvanotropic Reactions of the Medusa Polyorchis penicillata, 

 A. Agassiz. With 4 figures 289 



Charles Zeleny, 



Experiments on the I^ocalization of Developmental Factors in the Nemer- 

 tine Egg. With 19 figures 293 



T. H. Morgan and Abigail C. Dimon, 



An Examination of the Problems of Physiological "Polarity " and Electrical 

 Polarity in the Earthworm 331 



Abigail C. Dimon, 



The Regeneration of a Heteromorphic Tail in Allolobophora foetida 349 



