816 
BULLETIN OF THE BUREAU OF FISHERIES 
Table 57 . — Chum, index of abundance for Admiralty Inlet traps, 1902-38 
Year 
Catches 
Efficiency 
weights 
Number of 
traps 
Index of 
abundance 
Index from 
si andard 
curve 
1902 
21,952 
15, 324 
2 
143. 252 
1903 
1904... 
1905 
36, 589 
34, 921 
4 
104. 776 
118.043 
1906 
34,911 
15, 324 
2 
227. 819 
1907 
19, 068 
33, 988 
2 
56. 102 
1908 
26, 221 
24, 586 
3 
106. 650 
106. 650 
1909 
86, 368 
24, 586 
3 
351. 289 
351. 289 
1910 
94, 885 
41, 906 
4 
226. 423 
207. 435 
1911 
67, 474 
41,906 
4 
161.013 
155. 483 
1912 
48, 357 
41,906 
4 
115. 394 
155. 829 
1913 
24, 777 
18, 503 
2 
133. 908 
1914 
31, 730 
24, 586 
3 
129.057 
129.057 
1915 
32, 629 
41,906 
4 
77. 862 
83. 238 
1916. 
26, 690 
24, 586 
3 
108. 558 
108. 558 
1917 
35, 209 
48, 336 
5 
72. 842 
68. 592 
1918... 
31,578 
48, 336 
5 
65. 330 
65. 907 
1919 
28, 815 
29,833 
3 
96. 588 
1920 
1921 
1922 
8,871 
24, 992 
2 
35. 495 
1923 
22, 897 
56, 660 
6 
40.411 
36. 094 
1924 
29. 604 
50, 577 
5 
58. 533 
1925 
13, 809 
56,660 
6 
24. 372 
17. 929 
1926 
34, 565 
56 660 
6 
61. 004 
70. 630 
1927 
26, 439 
50, 327 
6 
52. 534 
55. 349 
1928. 
24, 539 
50, 327 
6 
48. 759 
62. 637 
1929 
45, 843 
67, 647 
7 
67. 768 
61. 962 
1930 
20, 883 
67, 647 
7 
30. 871 
19. 556 
1931 
21,346 
34; 737 
3 
61.450 
1932 
9, 626 
18, 659 
2 
51. 589 
1933 
24, 275 
69, 323 
6 
40. 920 
38. 062 
Total 
929, 950 
Table 58 . — Chum-salmon index of abundance from Puget Sound purse seines 
Year 
From September 23-November 3 
From October 7-November 3 
Number of 
fish 
Number of 
catches 
Weighted 
number of 
catches 
Average 
catch 
Number of 
fish 
Number of 
catches 
Weighted 
number of 
catches 
Average 
catch 
1910 
7, 211 
20 
18.40 
391.90 
7, 211 
20 
183. 40 
391. 90 
1911 
42. 190 
111 
103. 24 
408. 66 
42, 190 
111 
103. 24 
408. 66 
1912. 
88, 268 
163 
155. 44 
567. 86 
86, 156 
124 
117. 56 
732. 87 
1913 
37,612 
174 
199. 78 
188. 27 
36, 851 
163 
187. 34 
196. 71 
1914 
169, 628 
360 
405. 10 
418. 73 
154, 475 
261 
295. 26 
523. 18 
1915 
129, 855 
620 
779. 38 
166. 61 
121,178 
461 
576. 84 
210. 07 
1916 
157, 217 
665 
786. 90 
199. 79 
151,755 
520 
614. 76 
246. 85 
1917. 
190, 120 
1,471 
1, 838. 92 
103. 39 
186, 042 
1, 330 
1, 659. 78 
112. 09 
1918 
149, 824 
749 
973. 54 
153. 90 
140, 178 
598 
764. 04 
183. 47 
1919 
174,512 
753 
963. 04 
181.21 
154, 926 
551 
709. 50 
218. 36 
1920 
76, 038 
298 
394. 04 
192. 97 
70, 043 
217 
283. 18 
247. 34 
1921 
48, 546 
688 
1, 004. 46 
48. 33 
40, 606 
383 
551. 74 
73. 60 
1922 
79.111 
552 
761. 30 
103. 92 
71, 675 
412 
541.50 
132. 36 
1923.. 
146, 388 
671 
971. 16 
150. 74 
136, 875 
526 
759. 82 
180. 14 
1924 
176, 332 
490 
640. 26 
275.41 
157, 939 
376 
486. 74 
324. 48 
1925 
117, 305 
817 
1, 102. 88 
106. 36 
111,886 
672 
901.16 
124. 16 
1926 
285, 644 
1, 116 
1, 698. 14 
168. 21 
258, 216 
758 
1, 149. 84 
224. 57 
1927 
95, 651 
1,061 
1,581.94 
60. 46 
88, 328 
766 
1, 122. 44 
78.69 
1928. 
462, 882 
2,004 
3,134.97 
147. 65 
441,033 
1,511 
2, 378. 50 
185. 42 
1929 
725, 733 
2, 527 
3, 766. 80 
192. 67 
674, 788 
1,858 
2, 721.71 
247. 93 
1930 
342,117 
1.167 
1, 904. 25 
179. 66 
327, 533 
695 
1, 146. 29 
285. 73 
1931 
335, 268 
2,061 
3,314. 75 
101. 14 
319, 927 
1, 596 
2, 538. 51 
126. 03 
1932 
693, 046 
2,528 
4, 140. 78 
167. 37 
648, 097 
1,931 
3,113. 67 
208. 15 
1933 
230, 945 
2,519 
4.013. 42 
57.54 
215, 860 
1,988 
3, 168. 02 
68.14 
1934 
361, 103 
2,253 
3, 425. 82 
105. 41 
330, 203 
1,756 
2,651.12 
124.55 
There is usually a greater demand for chums in the even-numbered years, owing 
to the lack of pinks, and the deliveries are raised by increased effort on the part of the 
