UNIVERSITY OF CALIFORNIA PUBLICATIONS 



IN 



ZOOLOGY 



Vol. 6, No. 9, pp. 189-204, 1 text-figure and map May 28, 1910 



CONTRIBUTIONS FROM THE LABORATORY 



OF THE 



MARINE BIOLOGICAL ASSOCIATION OF SAN DIEGO 



XXIX 



PRELIMINARY REPORT ON THE HYDRO- 

 GRAPHIC WORK CARRIED ON BY THE 

 MARINE BIOLOGICAL STATION OF 

 SAN DIEGO 



BY 



GEORGE F. McEWEN 



BERKELEY 



THE UNIVERSITY PRESS 



