U. S. B. F.— Doc. 902. 



FIG. 40.— ST.RIPPING SALMOM WITH AID OF STRAIT JACKET. 



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FIG. 41.— CHEHALIS HATCHERY, WASHINGTON FISH AND GAME COMMISSION. 

 SHOWING RACKS TO PREVENT SALMON FROM GOING UPSTREAM, AND PEN FOR 

 HOLDING SPAWNING FISH. 



