S04 
BULLETIN OF THE BUREAU OF FISHERIES 
Table 46. — Indices of abundance of king salmon from traps 
Year 
Data by areas 
Index figures 
North of Sandy 
Point 
Rosario Strait 
Admiralty Inlet 
North of 
Sandy 
Point 
Rosario 
Strait 
Admir- 
alty 
Inlet 
Number 
of fish 
Number 
of traps 
Number 
of fish 
Number 
of traps 
Number 
of fish 
Number 
of traps 
1910. 
20, 821 
6 
12, 053 
1 
1.611 
1. 741 
1911 
28, 475 
6 
19, 265 
2 
2 . no 
1. 780 
1912 
31, 841 
9 
13, 904 
2 
1. 631 
1. 382 
1913 . 
22, 806 
6 
9, 844 
2 
1. 747 
1. 007 
1914 
31,317 
7 
13, 385 
2 
1. 956 
1.344 
1915 _ 
23, no 
8 
11, 106 
2 
1. 145 
1. 168 
1916. 
29, 577 
8 
7,808 
2 
4, 869 
1 
1. 661 
.920 
2. 394 
1917 
27, 640 
8 
9, 367 
2 
11,420 
2 
1. 627 
.974 
3. 362 
1918 
35, 562 
8 
13, 432 
2 
17, 244 
2 
2. 290 
1.416 
5. 105 
1919 
32, 308 
9 
10, 166 
2 
9, 728 
2 
1. 744 
1. 017 
2. 975 
1920 
44, 266 
7 
19, 595 
2 
16, 279 
4 
2. 859 
1.848 
1.548 
1921 
38, 922 
9 
10, 227 
2 
14, 359 
2 
2. 088 
1. 053 
2. 216 
1922 
39, 717 
7 
IS , 333 
2 
7, 217 
2 
2. 676 
1. 675 
1. 937 
1923 
28, 078 
7 
11, 464 
2 
21, 996 
4 
1. 962 
1. 096 
2. 160 
1924 
46, 926 
8 
11,650 
2 
28, 693 
4 
2.887 
1. 061 
2.645 
1925... 
48, 234 
10 
10, 500 
2 
18. 407 
4 
1.915 
1.020 
1.974 
1926 
36, 890 
10 
10, 749 
2 
16, 220 
4 
1. 534 
1. 071 
1. 640 
1927 
51, 161 
11 
10, 060 
2 
11,638 
3 
2. 057 
1. 056 
1.494 
1928 
26, 972 
9 
7, 129 
2 
7,915 
3 
1.590 
.775 
1.034 
1929 
44, 423 
10 
11,287 
2 
12, 862 
4 
1.868 
1. 113 
1. 368 
1930. 
27, 112 
11 
12. 656 
2 
9. 428 
4 
1. 274 
1. 292 
1.054 
1931... 
24,914 
10 
7, 060 
2 
3, 927 
2 
1.204 
.940 
.697 
1932 
2, 764 
2 
19, 703 
2 
5, 223 
1 
1. 428 
1. 964 
1.927 
1933 
16, 559 
7 
13. 431 
2 
11, 046 
3 
1.529 
1. 325 
1. 426 
1934. 
38, 405 
9 
11, 952 
2 
4,407 
2 
2. 094 
1.116 
.947 
Total 
798, S 03 
306, 126 
232, 878 
Indices of abundance for these three areas, calculated in the same manner as 
were those from traps for coho salmon, are presented in the last three columns of 
table 46. The indices are high for the northern areas during the post-war period 
prior to 1925. Increased catches during this period may be due in part to the lesser 
competition of trolling gear, which fishes the rims before they reach the traps. The 
number of trolling licenses issued by the State of Washington for the Puget Sound 
district decreased from 1,032 in 1919 to 165 in 1922, and then increased considerably 
in number to 820 in 1927 (see table 23). There is little difference in levels of abundance 
in early and late years in the two northern areas. 
In Admiralty Inlet, however, abundance is highest before 1920 and reaches a 
lower level by 1924; a decrease in the size of the runs in recent years is strongly 
indicated. 
PINK SALMON 
By George A. Rounsefell 
GENERAL LIFE HISTORY 
Because pink salmon invariably mature in their second year, as has been well 
established, there is no overlapping of generations as in the sockeye, king, and chum 
salmon, and, in some regions, in the coho. In this region there is an abundant run of 
pink salmon every second year, in the odd-numbered years. They spawn in scores of 
small streams, as well as the lower tributaries of the main rivers. In the Fraser River 
they even spawned above Hell’s Gate in Seton and Anderson lakes and the Nicola and 
Thompson rivers until the blockade at Hell’s Gate in 1913, which, coming in an odd- 
