60 U. S. BUREAU OF FISHEEIES. 



spawning grounds. The remaining eggs were used for stocking 

 the Bozeman and Glacier Park hatcheries. 



GLACIER NATIONAL PARK (MONT.) SUBSTATION. 



Approximately 215,000 steelhead and rainbow-trout lingerlings- 

 that had been carried over from the hatch of the preceding year 

 in the Glacier Park hatchery were liberated in July in suitable 

 streams within the park, and there were on hand at the close of the 

 year 85,000 eyed eggs and 70,000 fry of the rainbow trout, these 

 being the result of a shipment of eggs from the Madison Valley 

 field early in June. ♦ 



An interesting and important feature of the work in this region 

 was the planting of eyed black-spotted trout eggs in the almost in- 

 accessible waters in that part of the park lying along the crest of 

 the Continental Divide and the Canadian border. The trip was 

 made on horseback and the planting was done by the superintendent 

 of the station assisted by two of the park rangers. All facilities for 

 the trip having been provided by the National Park Service, includ- 

 ing the loan of saddle and pack horses, the start was made from 

 Bozeman on August 4. In the course of the trip, which consumed 

 16 days, a total of considerably more than a million eggs was planted 

 in the headwaters of numerous lakes and streams that could not 

 otherwise have been reached. Among the waters thus stocked were 

 the St, Mary River and its tributaries. Hidden Lake, Lake Ellen 

 Wilson, Grinnell Lake, Belly River, Lois, Margaret, and Glenns 

 Lakes, and numerous smaller streams. 



LEADVILLE (COLO.) STATION. 

 [C. H. Van Atta, Superintendent.] 



In connection with the propagation of brook trout, the principal 

 species handled at this station, the usual egg collections were made 

 on shares from privately owned lakes, the total stock secured during 

 the season amounting to 6,690,000. 



Many of the fish entering the traps in the Engelbrecht field were 

 found to be badly afflicted with fungus, this trouble being due, it is 

 thought, to the abnormally low stage of water in the lake during 

 the summer and fall. However, no bad effects were discernible in 

 either the eggs or the resulting iry, all of which seemed to be of 

 uniformly good quality. 



At Turqvioise Lake, where nearly half the season's stock of brook- 

 trout eggs was secured, the work was hampered by unusually cold 

 weather. A coating of ice from 4 to 8 inches thick formed on the 

 lake before any collections were made, and in order to gain access 

 to the brood fish a seine had to be threaded through holes cut 

 in the ice at frequent intervals. Some difficulty was also experienced 

 at this point from a scarcity of male fish. Females were in the 

 majority from the beginning, the disparity in numbers increasing 

 as the season progressed, and toward the close of the spawning 

 period females predominated to such an extent that fully 600 brood 

 fish containing partially ripened eggs had to be released because of 

 a lack of fertilizins; medium. 



