

UNIVERSITY OF CALIFORNIA PUBLICATIONS 

 ZOOLOGY 



Vol. 1, No. 2 (pp. 105-114) April 30, 1903 



A CASE OF 



PHYSIOLOGICAL POLARIZATION 



IN THE ASCIDIAN HEART 



BY 



FRANK W. BANCROFT 



AXD 



C. O. ESTERLY 



BERKELEY 

 THE UNIVERSITY PRESS 



PRICE, 10 CENTS 



