REPORT OP COMMISSIONER OV PISH AND PISHERIES. LXXI 



troughs were provided, the trap was built below the rack for the cap- 

 ture of the fish, aud a Hume was laid from a small brook near by, from 

 which the water supply was obtained by gravity. Salmon appeared 

 in large numbers in July, and a few were observed spawning the latter 

 part of the month. The first eggs were obtained on August 11, and 

 the collections were continued until September 12, during which time 

 2,000,000 were secured from 492 females; 2,340,000 of them were trans- 

 ferred to Clackamas, and the remainder were hatched and liberated in 

 the Salmon Kiver during the month of November. The supply of 

 water failed during the season, and it became necessary to i^lace part 

 of the hatching-troughs in a narrow channel, where they were supplied 

 with water conducted through a short flume from the bottom of the 

 river. Wooden covers were provided for each trough to protect the 

 eggs, and canvas, stretched on poles, shaded them from sunlight. The 

 heavy rains in November caused a freshet in the river, which neces- 

 sitated the removal of the hatching apparatus to higher ground. 



Little White Salmon River Station, Washington. 



After the examination of a number of localities on the Columbia and 

 its tributaries by Prof. B. W. Evermann, two sites were recommended 

 for establishment of auxiliary stations, one on the Washington shore 

 of the Columbia opposite the Cascades, and the other just below Celilo, 

 on the Oregon side. At the Cascades Mr. George Stevenson, of Van- 

 couver, oftered to furnish all the fish required free of charge, with the 

 free use of the land and water controlled by him, and a house for the 

 employees. It was proposed to capture the fish by means of scow wheels 

 and hold them until ripe in a narrow channel between the island on 

 which the wheels are located and the main shore. The superintendent 

 was instructed to make the necessary arrangements, but before under- 

 taking the work an attempt was made to transfer the fish from the 

 wheels to the channel. The results attained were so poor that the site 

 was abandoned. The question of establishing a station at the other 

 site, near Celilo, was also considered, but it was given up as imprac- 

 ticable, in view of the fact that it would be necessary to transfer the 

 fish some distance from the seines to the retaining pond. 



As it was believed that the streams in the vicinity of the Cascades 

 aftbrded the principal spawning-grounds of the quinnat salmon, fur- 

 ther investigations were made, and as a result the Little White Salmon 

 was favorably reported on by the superintendent and Mr. Evermann. 

 This stream empties into the Columbia about 14 miles above the Cas- 

 cades, and the point selected for the establishment of the station is 

 about a half mile from its mouth. Immediately after the site had been 

 chosen, steps were taken to erect a rack across the river aud to con- 

 struct a hatchery and a mess-house for the men. Mr. W. P. Sauerhoff, 

 who had been detailed to assist the superintendent, arrived on the 

 grounds by September 21, and by September 26 work had progressed 

 far enough to commence the collection of eggs. Eggs were taken daily 



