LXX REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



The Roslyn (iV. Y.) Station.— RGference has already been made to 

 this station iu charge of Mr. Fred. Mather, under the head of " Athuitic 

 Salmon." It was also used for bringing forward a number of eggs of 

 land-locked salmon, hatched out for distribution in New York. 



From 10,000 eggs received on February 18, 1882, 5,000 fish were 

 planted in Skaneateles Lake on May 2, and 5,000 placed in the waters 

 of the South Side Club of Long Island. 



d. The Lake Trout {Salvelinus namaycush). 



The Northville Station. — Not much was done during 1882, iu connec- 

 tion with this species, by the United States Fish Commission. A few 

 hundreds of thousands of their eggs were taken by Mr. Clark of the 

 Northville Station, and developed for distribution, as indicated in the 

 general table. 



The largest amount of this work appears to have been done by the 

 New York State commission. 



The lake trout is not considered a very palatable variety, and there 

 is consequently very little demand for it. Whenever it is called for, to 

 stock waters unsupplied with this fish, the eggs can be readily obtained 

 and supplied. 



e. The Quinnat or California Salmon (Oncorhynchus chouicha). 



The McCloud River Station. — Mr. Livingston Stone, iu charge of the 

 salmon-breeding station on the McCloud Eiver, began active work Sep- 

 tember 3, and it was continued till September 25, at which time he had 

 over 4,000,000 eggs in the hatching house. Mr. Stone had been in- 

 structed to take only about this number and then to give them to the 

 California Fish Commission to be hatched out and placed in the Sacra- 

 mento. This action of the United States was thoroughly appreciated 

 by the California Commission. One of the commissioners stated ofiici- 

 ally that the annual salmon catch of 5,000,000 pounds depended entirely 

 on the work of the United States Commission. Although breeding fish 

 at this station this year were scarce, their weight exceeded that of the 

 breeders of any previous season. The av^erage weight of the females 

 after spawning was about 14 pounds. One fish before spawning had 

 the enormous weight of 27 pounds. Mr. Stone, is his report, bears cheer- 

 ful testimony to the help of the Indians in the vicinity of the station. 

 Their services were almost invaluable to him in the prosecution of his 

 work. 



Mr. Stone made some interesting experiments in impregnating eggs 

 of the salmon. He allowed the eggs to remain in the pan for periods 

 of different lengths before the milt was put on, the eggs being taken iu 

 a dry vessel and no water used until after impregnation. The result of 

 these experiments indicates that when the milt is eighteen hours old it 

 is impotent; second, that impregnation does not occur if the eggs are 

 waslied immediately after milt is added ; third, that there is a slight 

 chance of impregnating successfully eggs taken from dead fish ; fourth, 



