REPORT OF THE COMMISSIONER OF FISHER! E 7 



Summary of Distribution of Pish and Eggs, Fiscal Year ended June 30, 1910. 



REVIEW OF OPERATIONS. 



The conspicuous increases in the output of fish and eggs over the 

 year 1909 were in blueback, silver, and Atlantic salmons, lake trout, 

 lake herring, yellow perch, shad, cod, flatfish, and steelhead trout, 

 the production of the latter three species exceeding all previous 

 records. 



There was a slight decrease from last year in the number of chinook 

 salmon liberated from the Pacific coast stations. Notwithstanding 

 a normal run in the Sacramento, the season at the California stations 

 was the poorest for thirteen years, due partly to such low water that 

 the fish were unable to ascend the tributary streams on which the 

 hatcheries are located, and, later, to freshets which carried away the 

 rucks and permitted the impounded fish to escape, with the loss of 

 millions of eggs. Two causes are at present militating against the 

 increase of salmon in these streams — the increasing numbers of black- 

 bass, which prey upon the young salmon after planting, and the 



