REPORT OF COMMISSIONER OF FISH AND FISHERIES. 121 
CLACKAMAS STATION, OREGON (WALDO F. HuBBARD, SUPERINTENDENT), 
Quinnat salmon eggs were obtained from the Clackamas and Sandy 
rivers, the latter stream being a new field. Alcoholic collections of eggs 
and fry were made and transmitted for the 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 this 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 August, 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 construe- 
tion, was wholly ineffective. 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 November 11, the number 
obtained amounting to 3,265,000. The greatest number taken ina single 
day was 132,000 on October 21; the smallest, 4,000 on November 11. 
Adult fish yielding eggs numbered 623. 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. 
Karly in September two trips were nade to the 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 6, continuing thirty days, collections amounting to 1,179,000 from 
253 fish. As soon as the eggs had 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- 
