84 
BULLETIN OF THE BUREAU OF FISHERIES 
Table 21. — Chinooks taken by troll near the mouth of the Columbia River, collected at Ilwaco, Wash., 
May 18, 1920 
Females tabulated according to size of eggs, type of nucleus, and age 
Ocean nuclei 
Stream nuclei 
Logarithm of diameter of eggs (mid-value of claso) 
Third 
year 
Fourth 
year 
Fifth 
year 
Fourth 
year 
Fifth 
year 
Total 
0.05_ 
1 
I 
.07 
2 
2 
.11* 
3 
3 
.13 
8 
8 
.15 
7 
7 
.17._ _ 
4 
1 
6 
. 19 
3 
3 
.21 
1 
1 
1 
3 
.23 
1 
4 
3 
8 
.25._._ 
5 
1 
1 
7 
.27 
1 
3 
4 
.29 _ 
1 
1 
1 
o 
o 
.31 
1 
1 
.33 
1 
1 
2 
.35-_ _ 
1 
2 
1 
1 
5 
.37 
1 
6 
1 
7 
.39 _ _._ 
1 
2 
1 
2 
6 
.41 _ _ _ 
1 
1 
4 
1 
7 
.43 _ 
2 
2 
1 
3 
8 
.45 _ 
1 
3 
2 
1 
7 
.47 
2 
2 
.49 _ 
1 
1 
2 
.51 
1 
1 
.55* 
3 
1 
4 
.61* 
1 
1 
Total 
39 
36 
13 
13 
6 
107 
Mean 
(') 
0. 4054 
0. 4333 
1 Group with log D less than 0.30, mean is 0.1474± 0.0053; standard deviation is 0.0444±0.0038. Group with log D greater 
than 0.30, mean is 0.395. 
2 Group vrith log D less than 0.30, mean is 0.2486. Group with log D greater than 0.30, mean is 0.4254±0.0095; standard 
deviation is 0.0658±0.0067. 
3 Group with log D less than 0.30, mean is 0.2300. Group with log D greater than 0.30, mean is 0.4167. 
Table 22. — Chinook salmon taken by troll in Monterey Bay, Calif., June 16, 1915 
Tabulated according to length, type of nucleus, age, and sei 
Centimeter length 
(mid-value of class) 
47. 
49.. 
51-. 
53_. 
65.. 
67.. 
59., 
63* 
67*, 
71., 
73., 
75., 
77.. 
79.. 
Ocean nuclei 
Second year 
Male 
Fe- 
male 
Total 
Third year 
Male 
Fe- 
male 
Total 
Fourth year 
Male 
Female 
Total 
