CONTENTS 
PAGES 
1. A Report upon the Physical Conditions in San Francisco Bay, Based 
upon the Operations of the United States Fisheries Steamer 
‘‘Albatross’’ during the years 1912 and 1913, by Francis B. 
Sumner, George D. Louderback, Waldo L. Schmitt, and Edward 
C. Johnston; 13 plates and 20 text figures —......---cs--cccccceeceeeeeeeeeceees 1-198 
2. Molluscan Fauna of San Francisco Bay, by E. L. Packard; 47 plates 199-452 
TNIKG RED: 6 li ea Sa ah ae oe ce Ne oe crt a ae OS 453-457 
