RErURT OF COMMISSIONER OF FISH AND FISHERIES. 



05 



Of the 51,500 3"oung' rainbow trout on hand at the beginninjj;- ot" the 

 year 44,088 were distributed in the fall and 2,000 were held for rear- 

 ing-. The adult rainbow trout were placed in the rearing-ponds early 

 in December, and from them 487,011 eyed eggs were obtained. Of 

 these, 91,290 eyed eggs were the product of 376 two-year-old female 

 trout, being 63i per cent of the total number of green eggs taken from 

 these young fish, and a much better percentage than usual for fish of 

 this age. Of the eggs thus obtained 304,415 were shipped on assign- 

 ment, 25,000 were distributed as fry when 3 months old, and 77,000 

 remained on hand at the close of the year. 



Shipments of eggs from other stations to be hatched and the prod- 

 uct reared for the aquarium at the Louisiana Purchase Exposition 

 were received as follows: Quinnat salmon eggs, 10,000, which were 

 hatched, and the product at the close of the year amounted to 0,900 

 young fish; landlocked salmon, 5,000, which nearly all died in hatching, 

 only about 200 remaining at the close of the year; steelhead, 10,000, 

 which hatched well and grew nicely, the product on hand at the close 

 of the year being 6,400; grayling, 25,000, large numbers of which 

 died in process of hatching, though 8,000 remained at the close of the 

 year and were in fine condition. 



In addition to the propagation of the Salmonidse above referred to, 

 the various fishes pi'opagated in ponds were handled at the station, and 

 while the work during the year was not entirel}^ successful, 32,905 

 yearlings were distributed, as follows: 18,400 rock bass, 3,251 straw- 

 berry bass, 9,514 black bass, and 1,800 sun-fish. 



Leadville Station, Colorado (E. A. Tulian, Superintendent). 



At the beginning of the year there were on hand 200,800 brook-trout 

 fingerlings, of which 30,000 \vere planted during the month of July, 

 9,000 in August, 53,000 in September, and 35,500 in October, the losses 

 during this time amounting to about 51 per cent. 



The usual arrangements were made for the collection of brook-trout 

 eggs in the fall from lakes belonging to private individuals, and the 

 results of the work are embodied in the following statement: 



Source of supply. 



Spawning season. 



Eggs col- ^--^^- 

 leeted. j^^^ 



Fry 

 hatched. 



shipped. 



Station brood fish.. 



Uiieva Lake 



Smitn's ponds 



Wellington Lake . . 



Young's ponds 



Musgrove's ponds . 



Derrv's ponds 



Black Lake 



Oct. 3 

 Oct. 23 

 Oct. 21 

 Nov. 1 

 Oct. 10 

 Oct. 14 

 Oct. 28 

 Oct. 28 



to Dec. 6 

 to Nov. 27 

 to Dee. 5 

 to Nov. 28 

 to Nov. 23 

 to Nov. 26 

 to Dec. 7 

 to Nov. 2 



235, 300 

 261,700 

 197, 300 

 1, 303, 400 

 1, 013, 700 

 569, 300 

 225, 300 

 443, 800 



31 



13.5 



12.3 



15.9 



21.9 



22. 8 



226,500 

 128, 300 

 944, 200 

 680,800 

 257, 100 

 182, 000 

 378, 700 



162, 540 



153, 400 

 111,700 

 183,200 



Total . 



4,249,800 



797,600 I 635,840 



Reference was made in last year's report to the improvement in the 

 percentage of eggs which produced fry owing to the fact that the 

 practice of stripping young fi^h had been discontinued. This year the 



F. C. 1902 6 



