REPORT OF COMMISSIONER OF FISH AND FISHERIES. 121 

 Clackamas Station, Oregon (Waldo F. Hubbakd, Supekintendent). 



Quinnat salmon eggs were obtained from tlie Clackamas and Sandy 

 rivers, the latter stream being a new field. Alcoholic collections of eggs 

 and fry were made and transmitted for tlie World's Fair. 



At the opening of the fiscal year the building of a rack across the 

 Clackamas for arresting the ascent of spawning salmon was well under 

 way, the structure being completed July 7. The former barrier used con- 

 sisted of two racks built on either side of an island, but tiiis season the 

 stream was closed on one side, the trap being located opposite. In the 

 latter part of June and throughout July a growth of green moss, never 

 before observed, was found on the bottom of the river, large quantities 

 floating down during a period of five or six weeks, banking against the 

 rack. Its removal required a great deal of labor. During the late 

 summer boats were repaired and minor improvements made. In Sep- 

 tember the trap which formed a part of the rack was put in position, 

 suitable inclosures built for holding the parent fish, and egg-collecting 

 and hatching apparatus overhauled. 



No salmon having appeared late in Aiigust, and it having been 

 learned that they could not pass the sawmill dam at Gladstone, a tour 

 was made to this point in company with Governor Pennoyer, the exec- 

 utive of the State of Oregon, the examination proving that there were 

 no means of ascent. A fishway on this dam, owing to poor construc- 

 tion, was wholly ineflective. In compliance with Governor Pennoyer's 

 request, the superintendent of the mill promised to erect a better fish- 

 way, but his promise was not fulfilled, and no fish would have passed 

 the dam but for freshets, two of which occurred in October. 



The first eggs from the Clackamas trap were taken September 20, col- 

 lections being made each day thereafter until i^Tovember 11, the number 

 obtained amounting to 3,205,000. The greatest number taken in a single 

 day was 132,000 on October 21; the smallest, 4,000 on November 11. 

 Adult fish yielding eggs numbered C23. Male fish predominated, the 

 exact number not being recorded. About 80 per cent of the eggs were 

 obtained in October; 248,000 in September, 2,590,000 in October, and 

 427,000 in November. 



Early in September two trips were made to tlie Sandy River, distant 

 about 15 miles, a suitable location for a field station being found, both 

 for an obstructing rack and water supply for developing eggs. Prepa- 

 rations were made for receiving and holding eggs, hatching-troughs 

 being transported overland from the station. Water was obtained from 

 a spring brook by means of a small dam and a wooden flume 150 feet 

 long. Across the river a rack 175 feet long, with a trap below, was 

 constructed. Employees were quartered in tents, all preparations being 

 completed by September 20. The taking of eggs was commenced Octo- 

 ber G, continuing thirty days, collections amounting to 1,179,000 from 

 253 fish. As soon as the eggs liad developed sufficiently for eye-spots to 

 be distinctly seen they were transferred to the station by wagon, in four 

 loads, between November 17 and December 3, the losses sustained inci- 



