376 '^- S. BUEEAU OF FISHERIES 



by the State were hatched also, and 1,850,000 fry of that species were pro- 

 duced and distributed. 



Glacier Park {Mont.) substation. — The 1,500,000 black-spotted and rainbow- 

 trout eggs on hand at the opening of the fiscal year were hatched, and the 

 resulting fry and fingerlings were distributed in Glacier Park waters under the 

 cooperation of the park seiTJce. Grayling fry to the number of 725,000 were also 

 planted in the waters of the park. Twenty-five thousand eyed eggs of the 

 golden trout of California were furnished to this substation late in the year 

 through the courtesy of the California Fish and Game Commission. These will 

 be hatched and the product planted in high-altitude lakes. 



Leadville (Colo.) Station 

 (C. H. Van Atta, Superintendent) 



The extensive equipment of the Leadville station enables the station force 

 to accomplish important development work without recourse to outside assist- 

 ance. During the year the water-power line was extended, to the new shop 

 building and connected with a water wheel for operating a sawmill and other 

 machinery. The shop building, which is 36 by 50 feet and has two stories, 

 was virtually completed, and foundations were laid for a large garage building. 

 A sawmill outfit was purchased, and over 30,000 feet of logs were cut into 

 flooring, sheathing, and molding. 



Seven field stations, consisting of private lakes of varying size and number, 

 were worked for brook or rainbow trout eggs. These operations are conducted 

 on a share basis, the bureau generally supplying the men and equipment and 

 allotting a portion of the eggs taken to the owner of the property. Almost 

 7,000,000 eggs of the two species mentioned above were secured in this manner, 

 In addition to the work with these species, the Leadville station received ship- 

 ments of black-spotted. Loch Leven, and lake trout eggs from other stations. 

 One hundred thousand Loch Leven and 190,000 block-spotted trout fingerlings 

 were on hand at the close of the year. 



Yellowstone National Park (Wyo.) Substation 

 (C. F. Culler, in charge) 



Inasmuch as a crew was unable to reach the station until June 4, the major 

 portion of the work in this field was done in the fiscal year 1929. The season 

 was unduly late in starting, and the first eggs were taken about a month later 

 than last year. Aside from the usual repairs required by buildings unused a 

 great part of the year, a new pipe line almost a mile long was laid from the 

 head of Soldier Creek to the site of the new hatchery to be built during the 

 1928 season. An intake dam was constructed and fenced and the water con- 

 ducted to a collecting basin about halfway to the hatchery site. The hatchery 

 dock also was extended and repaired. 



The take of eggs, amounting to 13,300,000, was below normal, although it 

 slightly exceeded that of the previous year. Over 50 per cent of the eggs were 

 secured from streams of the South Arm, although 12 streams were fished. 

 Distribution of fry to distant points on Yellowstone Lake was facilitated by 

 placing troughs on the boat and utilizing a small artificial pump for the water 

 supply. The fry can thus be transferred without loss while they are still on 

 the trays. The incubation of the eggs was more successful than last year, 

 approximately 8S per cent having been fertile. A continuation of the plan 

 followed last year of detailing a park employee to conduct parties through the 

 hatchery and explain its operations has resulted in a minimum loss of time 

 from fish-cultural work from interruptions. Thanks are due to the superin- 

 tendent and other ofiicials of the park staff for their aid and cooperation in 

 facilitating the operations of the bureau. 



Saratoga (Wto.) Station 



(S. M. AiNSWORTH, Superintendent) 



Only minor repairs were made to the water-supply system, station buildings, 

 and grounds, as it was anticipated that more extensive improvements would 

 be made under the special appropriation that will be available during the com- 



