PACIFIC SALMON FISHERIES. 59 
men, as noted below, and has been continued, with the exception of 
1914, to the present time. This work is made possible by the gen- 
erosity of the Alaska Packers Association of San Francisco and the 
Alaska-Portland Packers Association of Portland, Oreg., who furnish 
the material and erect the barricade, also the labor needed throughout 
the season, while the Bureau of Fisheries furnishes the personnel 
required to carry on the direct work of counting the fish and making 
other observations. 
A rack or trap is constructed across the foot of Lake Aleknagik, at 
a constriction in the lake contour something more than 200 yards 
wide, for the purpose of intercepting all salmon entering the lake and 
passing them through gates or tunnels at such a rate and in such a 
manner that an accurate estimate of their numbers can be obtained. 
The pot of the trap is located near the left bank, and this has three 
gates by which the salmon can be passed from the pot into the lake 
Each gate is 2 feet in width, and its bottom rests on a wooden plat- 
form covered with white oilcloth, so that the fish can readily be seen 
as they pass over it when the gate is raised. When fish are passing 
through a gate a small wooden frame with a glass center is arranged 
so it will float on the water, and in order to ‘hold it in position it is 
fastened to the framework of the gate. This is for the purpose of 
making the water smooth so the fish can readily be seen even though 
the surface be disturbed by ripples, ete. 
When the fish are coming rather slowly, every one is counted by 
means of a tally register as it passes out through the gates. When the 
large run comes the following method is employed: An actual tally 
of every salmon passing through is made for one minute, and this is 
repeated 15 minutes later, the number passing through for 1 minute 
being regarded as the average for 15 minutes. A sheot with the whole 
day divided into quarter hours is kept ready at the gate and the 
number for one minute as taken from the tally register is immediately 
entered thereon by the attendant who made the tally. From these 
figures the total for the day is obtained. During only a small part 
of the season has it been found necessary to resort to this method of 
estimating the run. 
The following table shows for each year since 1908 the commercial 
catch of salmon made in Nushagak Bay, the number of fish passing 
from Wood River into Lake Aleknagik, the total of both and the per- 
centage of salmon that escaped the fishermen: 
Nushagak Wood Per cent 
Year Bay catch.| River tally.| Ttl- | of escape. 
DUNS OST. Sasa Boro ccwctccnina ioccace we cacadensdoncanete 6,140,031 | 2,603,655 | 8, 740,686 30.0 
JST SE Io ys eae ee es cee Be a a PP 4, 687, 635 893,244 | 5,580,879 16.0 
LOO ABS san aie (ee Ee Se dene See 4,384, 755 670,104 | 5,054, 859 13.2 
BETS tenet ate ee tee ee ee eee abc be cess coe tio’ 2,813, 637 354,299 | 3,167,936 Gey | 
| REESE ie a ae gee 3866,950| 325,264] 4’ 1927914 7.7 
lio. ica, econ glide deh ie leet dh Cae Larus tod ieapiar 5,238,008 | 763,109 | 5,989,117 12.5 
MME EE ea ain eed india. Beeell 6, 174,097 int ul Made eis or 
Le eee | 556 t ea SE  eee 2 Bake eee 5, 676, 457 259, 341 5, 935, 798 4.3 
IOIGZ SSS Secs a eee soe ics. CRIBS EIS 3, 592, 574 551,959 | 4,144, 533 13.3 
hy aa, Wey eS os ale aeeannias ty 5,679,818 | 1,081,508 | 6,761/326 15.9 
FE fe ad Bo “aS RU ae Pied eR eh 6,078,965 | 943/202 | 7,022’ 167 13.4 
bie ate, A se sition ot a. 1,452/981 | 145,114 | 17598/045 9.0 
s Work not carried on this year, 
