Bulletin of the Museum of Comparative Zoology 

 AT HARVARD COLLEGE. 



Vol. XXVII. No. 7. 



THE EARLY EMBRYOLOGY OF CIONA INTESTINALIS, 

 FLEMMING (L.). 



By W. E. Castle. 



With Thirteen Plates. 



CAMBRIDGE, MASS., U.S.A.: 



PRINTED FOR THE MUSEUM. 

 January, 1896. 



