SALMON AND TEOUT IN ALASKA. 29 



outfit, will account for the meager results the observers obtamed in 

 certain lines. 



At this station the main attention was given to adult fishes. These 

 were taken in a small pound or trap spanning about one-fourth the 

 outlet on the shoal side and built for taking the incoming fish. A 

 trap for young was operated a few times in connection with this 

 pound and was also set a few times in tributary creeks. The party 

 was equipped with a single net so constructed, and the debris from 

 the lake soon accomplished its ruin. On account of this shortage 

 of proper gear the movement of fry and yearlings from Karluk Lake 

 was not followed with any definiteness. Five sets were made with 

 a 25-foot net rigged as above described, with the following results: 



June 5, over night, sculpins, sticklebacks, 150 salmon parrs, a few 

 salmon fry, a few trout fry. 



June 25, over night (between pound and shore), 738 scidpins, 530 

 sticklebacks, 23 trout, 32 salmon parrs, 16 salmon fry. 



June 27, over night, sculpins, sticklebacks, 8 trout, 2 salmon parrs, 

 2 salmon fry; 12 m. to 5 p. m., a few sculpins and sticklebacks. 



Jime 28, over night, sculpins, sticklebacks, 1 salmon parr, no fry. 



June 30, 12 m. to 4.30 p. m., 3 sculpins, 165 sticklebacks, 1 salmon 

 parr. ■ 



It will be noted that all these results show but a slight movement 

 of sockeye fry from the lake. It may be they had reached the river 

 prior to the first set of the net, though not all had passed dowTi the 

 stream. Throughout May and June the sloughs of the upper part of 

 the Karluk River contained many sockeye fry or small fingerlings. 

 In a haul May 22 nearly a thousand were taken, many with rem- 

 nants of yolk. June 21 large schools of small fingerlrngs were numer- 

 ous in the upper river, and some were taken with the dip net. June 

 30 a few fingerlings averaging nearly 2 inches in length were taken 

 in a pool of the river. Such fish seem to have disappeared soon after 

 this date, since the observers made no further note of them. Fry 

 and small fingerlings were abundant in the lagoon during June, July, 

 and into August, but as these may have been the hatchery output, 

 their presence indicates nothing regarding migration habits, except 

 that they all apparently passed out into the sea dm-ing the summer. 



It would seem that the station party would have noted any large 

 movement from the lake had it occurred, since their camp was estab- 

 lished at its mouth early in May, before the ice hatl left it. But this 

 is not necessarily true. At that season daylight lasts from about 3 

 a. m. till 10 p. m. The young salmon travel little in daylight, and 

 it might easily be that a considerable movement could have occurred 

 without remark. It might be thought possible that the numerous 

 fry in the river were the product of eggs spaAVTied below the lake by 

 fish arriving after low temperatures obtained. That this is highl}' 



