648 
BULLETIN OF THE BUREAU OF FISHERIES 
locality was protected further by the prohibition of fishing within 1 mile of the mouth 
of the creek. 
The pink-salmon fishery reached its maximum production in 1913. With the 
exceptions of 1918 and 1922, the catches since then have been relatively small, indi- 
cating depletion unless the reduction can be traced to the effect of trap fishing along 
the coast from Kah Shakes Point to Tree Point. The tagging experiments near Cape 
Fox in 1926 demonstrated conclusively that traps in that locality caught a high per- 
centage of Boca de Quadra red and pink salmon. It is a reasonable conclusion, 
therefore, that traps at Foggy Point and Kah Shakes Point did likewise. Therefore, 
o o — rvi 
(y> o> cr> 
Figure 50.— Catch of coho, chum, pink, and red salmon in Boca de Quadra, 1895 to 1927. 
while the data unquestionably show that fewer pink salmon were captured in Boca 
de Quadra after 1913 than before that year, they cannot be taken as convincing proof 
of depletion of the fishery. The decline may be correlated with the increase in the 
number of traps in this section of the Revillagigedo Channel district, since all of them 
doubtless draw upon these runs. 
The catch of chums has shown wide and apparently inexplicable fluctuations. The 
peak of production occurred in 1924, but since then the catch has dropped rapidly 
until fewer than 3,000 were reported as taken in Boca de Quadra in 1927. Prior to 
this the catch had been fairly uniform from 1908 to 1920, although a very small catch 
