TWENTY-EIGHTH BIENNIAL REPORT. 



53 



is necessary if we are, to properly regulate the river and sea fishing 

 for salmon. We recommend that this work be continued and be 



made part of the present program. 



Caught Aug. 3, off the 

 California Coast near 

 Redding Rock . 



Length 30-^ in . 



Fourth year . 



Feb. 1922, age 3 years 

 Length 23-2- in . 



Third year 



Feb . 1921, age 2 years 

 Length 13^ in . 



Second year 



Liberated Nov . 1919 in 

 Klaraath River . 



Length 2^ in . 

 First year . 



Hatched Feb. 1919 . 

 Eggs taken Nov . 1918 

 from the Sacramento 

 River . 



Fig. 11. Photomicrograph of a scale of a kuig salmon of the 1919 markins experi- 

 ment indicating age and rate of growth. Photograph by J. O. Snyder. 



THE COLLECTION OF STATISTICS. 



The statistics collected ])\ the Commission are for the purpose of 

 detecting overfishing in case it occui^s, and for the study of the great 

 natural changes which oceui- in the abundance of the fish. It is, 

 perhaps, not generally known and appreciated that fishery statistics in 

 general are verv defective, so much so, indeed, that it seems futile to 



