484 U. S. BUREAU OF FISHERIES 



duce more than a nominal output of fish. Pond bottoms were ferti- 

 lized at intervals to overcome this situation. 



The water temperature at the Glacier Park, Mont., station was so 

 low that all fish hatched from the 2,000,000 black-spotted-trout and 

 250,000 rainbow-trout eggs received from the Yellowstone Park were 

 planted in the fry stage. 



In the Montana field, the Bozeman station distributed approxi- 

 mately 4,000,000 fry and fingerling trout and graylmg. The greater 

 percentage of this output was utilized in restocking waters under 

 Federal control. The experiment in the rearing of Montana grayling 

 fry to fingerlings proved very successful. The following construcion 

 work was made possible by two W. P. A. projects: Three-stall addi- 

 tion to the garage, construction of two new concrete rearing ponds, 

 painting of all buildings, graveling of driveways, cutting fire lanes 

 through forest areas, laying of drains, and many miscellaneous repairs 

 and improvements. 



The collection of Loch Leven trout eggs in Madison Valley again 

 fell to a new low. The Ennis, Mont., substation collected, at its four 

 spawning camps, less than 400,000 eggs of this species. However, 

 one-half million eggs of this variety were furnished this station by the 

 Montana Department of Fish and Game for hatching, rearing, and 

 planting in the Madison River and its tributaries in an eftort to 

 reestablish Loch Leven trout in this watershed. Although this station 

 is in an incomplete status, approximately oji million eggs, fr\', and 

 fingerlings were distributed. 



Considering the shortage of brood stock and the water levels of the 

 lakes, the production of pondfish was satisfactorv at the Miles City, 

 Mont., substation. The output of bass was slightly lower than during- 

 the previous season but the dift'erence in numbers was offset by the 

 size of the fish. The production of catfish was in excess of an}^ previous 

 year in the history of the station. 



In the Idaho territory, the Hagerman station reared its output of 

 ly^ million trout to large fingerlings befoi*e releasing them. Extensive 

 repairs and improvements, including the enlarging of the feed storage 

 room, were made possible by assignment of W. P. A. employees. 



The Salmon, Idaho, substation was operated during the summer 

 months, in cooperation with the Idaho Fish and Game Department, as 

 a base for handling the rainbow trout eggs collected at Williams Lake. 

 The total collection for the season was slightly in excess of 4,000,000. 



In the Colorado field, the Leadville station continued to cooperate 

 with private parties in the collecting of trout eggs. The percentage 

 the Bureau retains depends largely upon the manner in which the 

 activities are carried on. However, the Bureau received several million 

 eggs from such sources. The substation at Crystal Lake was utilized 

 as a rearing unit. At the Eagle Nest, N. Mex., substation, which is 

 operated during the summer months, approximately 2,000,000 rain- 

 bow-trout eggs were collected fi-om Eagle Nest Lake bv seining the 

 beach for spawners. Owing to the large number of suckers ascending 

 the creeks, this method of obtaining adult trout was necessarv^ 



The Creede, Colo., substation collected 3,285,000 brook-trout eggs 

 from Lake San Cristobal. These eggs were of excellent quality, eyeing 

 up approximately 98 percent and producing vigorous and healthy 

 fingerlings. There were 3,000,000 brook-trout eggs received from 

 commercial trout dealers for eyeing or hatching on a cooperative basis. 



