TH3 :.&T::RIAL: I?3 COLLEGTIOI.', PREPAiLiTIOIJ iUJD SXAiaNATION 



The material for this study ■'.vas collected from the commercial fishery 

 serving reduction plants and canneries, as detailed in Table 1. 



The entire fishin<:^ seasons were sampled systematically by the Fish and 

 Wildlife Service at Grays Harbor, IVashington, in 1939 and 19H0; at Monterey, 

 California, in 1939j and at San Erancisco,. California, in I9U0. In I9U0, 

 the Fisheries Research Board of Canada collected scales at Barkley Sound; 

 these the board, through the courtesy of Dr. John Hart, contributed for the 

 present study. In addition, special sanples were gathered in collaboration 

 with the California State Fisheries Laboratory at lionterey in 19U0 and at 

 San Pedro in I9U0 and I9I4I. Other special samples were taken, as shovm in 

 table 1, f or various purposes. The specimens collected at Eureka, California, 

 were from pilchards from the stomachs of whales landed by the ViTialing Station 

 of the San Francisco Sea Products Company, and through the courtesy of the 

 Station, sent periodically to our laboratorj"-. In addition, scales collected 

 in I9UI - U2 in collaboration v.'ith the California State Fisheries Laboratory, 

 are drawn upon in this paper for illustrative or corroborative purposes. 



In the regular collections a sample consisted of 30 fish, taken at, random, 

 without regard to size, from one boat's catch. As many samples were taken 

 daily as to occupy a man's full time in collecting, measuring, and tabulating. 



~' Collections made in conjunction vfith routine sampling. 

 -;h^ Collections made for special purposes. 

 ±.1 United States Fish and 'lildlifo Service. 

 2/ California State Fisheries Laboratory. 

 -^/ Fisheries Research Board of Canada. 



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