This Memoir is a continuation of the work upon the Cubomedusee 

 which was begun by the late Dr. FRANKLIN STORY CONANT, and it 

 contains his notes of physiological experiments, as well as new results 

 which have been obtained by Dr. E. W. BERGER from the study of 

 material which had been collected by Dr. CONANT, who had hoped to 

 make it the object of further study. 



In order that this work may be made public as a continuation of 

 Dr. CONANT'S researches, his sister, GRACE WILBUR CONANT, has, with the 

 cooperation of other members of his family, made an adequate and 

 generous provision for its publication. 



For this gift, which is at once a contribution to science and a 

 memorial of an able and promising investigator, lately student and 

 fellow in this institution, the Johns Hopkins University returns its 

 grateful acknowledgments. 



DANIEL C. GILMAN, President. 

 W. K. BROOKS, Professor of Zoology. 



