- 18 - that survival, at least to the salt water stage, was not adversely affected by rearing the fry and fingerlings in five per cent effluent water. The failure of more than one salmon of this experiment to return "home" in the fall of 1953 was disappointing and unexpected, hence survival to maturity and possible genetic effects cannot be evaluated. Number of Chinook Salmon Recaptured from 12,410 LV and 13,174 RV Marked Fry Released July 1, 1950, from the University of Washington Year No. Recaptured LV RV 1950 0 0 1951 ll 15 Size in Area Pounds 1-5 Remarks Puget Sound Sportsfishermen 1952 1953 29 54 2-11 " 57* 44 6-18 1/2 Ocean 7 30 0 1 Total 47 to 104 8 1/2-34 " Sportsfishermen Commercial Puget Sound Sports- and Ocean U of W fishermen Trap 144 *Caught off the coast of Washington; may be from Kalama, Samish or University of Washington since a similar mark was used for all three.

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