THE ANATOMY, HABITS, AND EMBRYOLOGY OF 



YOLDIA LIMATULA 



A DISSERTATION PRESENTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY IN THE 

 JOHNS HOPKINS UNIVERSITY, JUNE, 1898 



BY 



GILMAN A. DREW 



[FROM THE MEMOIRS FROM THE BIOLOGICAL LABORATORY OF THE JOHNS HOPKINS UNIVERSITY, 1899] 



BALTIMORE 



THE JOHNS HOPKINS PRESS 

 1899 



