REPORT OF COMMISSIONER OF FISH AND FISHERIES. 91 



left in charge of a watchman. As usual, the adult fish were given to 

 residents in tho vicinity of the station, who came in large numbers 

 from 50 miles around for them. 



Clackamas Station, Oregon (S. W. Downing in charge). 



Mr. W. F. Hubbard, who had been in charge of this station since 

 its acquisition by the Government, was transferred to Nashua on July 

 1, and the station left in charge of Mr. J. N. Wisner, field superin- 

 tendent until July 10, when it was turned over to Mr. S. W. Downing, 

 who had been appointed to the vacancy. The construction of the rack 

 across the Clackamas River, a short distance above the station, was 

 undertaken at once and finished July 25. As the water supply had 

 been very unsatisfactory for a number of years a well was sunk to a 

 depth of about 20 feet near the hatchery, 4 feet below the level of the 

 low-water mark of the Clackamas River, and as the land formation 

 at that depth is of coarse gravel, an abundant supply of water was 

 secured. The water was very clear, of even temperature, and proved 

 of excellent quality for hatching purposes. During the summer the 

 seining-grounds below the rack were cleared and a number of other 

 improvements made. 



Operations commenced on September 13, but no ripe fish were taken 

 until the 15th. As there were very few fish below the rack, an agree- 

 ment was entered into with G. H. Oldenburg to furnish eyed eggs at 

 40 cents per 1,000, and 775,000 were secured in this way. The fishing 

 at the station resulted in the collection of 619,900, and 620,000 were 

 transferred from the Salmon River, which was being operated by the 

 State Fish Commission. In November 2,436,000 more were received 

 from the Little White Salmon, making a total of 4,450,900 handled 

 during the season. The fry resulting from these, 4,371,422, were 

 liberated in the Clackamas River and Clear Creek, over an area of 

 about 10 miles above and. below the station, except 250,000, which 

 were held in troughs and fed until they were four months old, when 

 all were liberated except 2,000 retained for further experiment. On 

 February 25 the fingerlings that were being fed were attacked by 

 fungus, the dorsal and pectoral fins turning white and little white 

 spots appearing on different parts of the body. Salt was applied by 

 drawing the water in the trough down low and then adding a pailful 

 of strong brine. The fry were allowed to remain in this until they 

 showed signs of distress, when fresh water was again turned on. 

 After several such treatments the disease disappeared. The well 

 water was used until November 30, when the water from the spring 

 was turned on." The spring water had been tried early in the season 

 when the eggs were received from the Salmon River, but on account 

 of its high temperature they commenced dying within a few hours after 

 being placed in it. 



With the view to getting additional data relative to the number of 

 salmon that return to the streams in which they are liberated, efforts 



