UNIVERSITY OF CALIFORNIA PUBLICATIONS 



IN 



ZOOLOGY 



Vol. 8, Nos. 8 and 9, pp. 311-352, pis. 22-25 November 18, 1911 



ON A SELF-CLOSING PLANKTON NET FOR 

 HORIZONTAL TOWING 



BY 



CHARLES ATWOOD KOFOID 



ON AN IMPROVED FORM OF SELF-CLOSING 



WATER-BUCKET FOR PLANKTON 



INVESTIGATIONS 



BY 



CHARLES ATWOOD KOFOID 



BERKELEY 

 THE UNIVERSITY PRESS 



