REPOKT OF COMMISSIONER OF FISH AND FISHERIES. 



69 



owners of stock tish, 113,477 were lost during incubation, 355,000 eyed 

 eggs were shipped to other stations, and the balance produced 496,523 

 fry. Of the fry, 50,033 were lost in the hatchery, 77,500 were given 

 to the owners of stock fish, 269,000 were distributed as fry during May 

 and June, and at the close of the 3'ear 100,000 fry remained on hand 

 in course of rearing for distribution as fingerlings and yearlings. 



The Loch Leven trout at the station began spawning October 23 

 and finished November 29, when 16,375 eggs had been collected. The 

 product of these eggs amounted to 14,000 fry, which were distributed 

 during Ma}^ and June. 



On February 10th 50,000 rainbow-trout eggs were received from 

 the Manchester Station in good condition. The 41,600 iry from these 

 eggs were distributed to various applicants and planted in streams on 

 the Rosebud Reservation and in Spearfish Creek. 



Between March 20th and May 31st 3,670 adult rainbow trout were 

 seined in the Laramie River and Sodergreen Lake, about 20 miles 

 south of Laramie City, Wyo. Only 183, or 5 per cent, of these fish 

 produced any eggs, the total collection amounting to 170,000, which, 

 after being eyed at the hatchery of the Wyoming Fish Commission, 

 were divided equally between the Laramie State hatchery and the 

 Spearfish Station, the latter receiving 75,000, the product of which 

 at the close of the 3^ear amounted to 60,000 fry. 



At the close of the year the stock of fish on hand was as follows : 



BozEMAN Station, Montana (James A. Henshall, Superintendent). 



The work at this station was confined to the propagation of brook 

 trout, black-spotted trout, steelhead trout, rainbow trout, Montana 

 grayling, and the collection of eggs at auxiliary stations. 



The work at the auxiliary station for the collection of black-spotted 

 trout eggs at Henry Lake, Idaho, was in charge of Mr. W. F. Jarvis, 

 who took the first eggs April 4 and the last May 24. From 700 females 

 there were obtained 871,500 eggs, an average of 1,200 per fish. Ripe 

 males were very scarce during the season, and the loss of nearl}^ a half 

 million eggs is to be attributed to this cause. Besides the eggs trans- 

 ferred to the Bozeman Station, 235,000 were shipped to other stations 

 and applicants, one assignment going to Belgium. The temperature 

 of the water in the hatchery during the season varied from 40° to 

 54° F., the water in the spring pool being much influenced b}- the air 

 temperature. 



