PROCEEDINGS 



CALIFORNIA ACADEMY OF SCIENCES 



Third Series. 

 Zoology. Vol. I, No. i. 



PLASMOCYTES; 



The Survival of the Centrosomes and Archoplasm of the 



Nucleated Erythrocytes, as Free and Independent 



Elements in the Blood of Batrachoseps 



attenuatus Esch. 



BY 



Gustav Eisen, Ph. D., 



Curator in the California Academy of Sciences. 

 WITH TWO PLATES. 



Issued April i, 1897. 



SAN FRANCISCO: 



Published by the Academy. 



1897. 



