

i_ &«^ 



*^ /y DEPARTMENT OF MARINE BIOLOGY 



^zhi^'j-oyj ■ •^■^^ OF 



THE CARNEGIE INSTITUTION OF WASHINGTON 

 ALFRED G. MAYOR, Director 



VOLUME XIV 



EXPERIMENTS IN THE BEEEDING OF CEEIONS 



BY 

 PAUL BARTSCH 



Curator of Marine Invertebrates, United States National Museum 



WASHINGTON, D. C. 

 Published by the Carnegie Institution of Washington 



1920 



