TAGGING SALMON IN ALASKA, 1923 
65 
Table 39. — Time, in days, required to travel to Bristol Bay from various tagging stations 
Locality and date 
Elapsed time 
before— 
Median 
time 
Approxi- 
mate 
rate of 
travel 
(miles per 
day) 1 
Locality and date 
Elapsed time 
before — 
Median 
time 
Approxi- 
mate 
rate of 
travel 
(miles per 
day) 1 
First 
arrival 
First 2 
per cent 
arrived 
First 
arrival 
First 2 
per cent 
arrived 
Unga Island: 
Morzhovoi Bay — Contd. 
June 2 to 5 
18 
22 
22.2 
20.3 
July 8 (trap No. 5) 
13 
14 
13.8 
25.4 
June 7 
19 
23 
22. 7 
19.8 
July 13 
12 
June 23 
15 
20 
20.9 
21. 5 
July 18 
June 26 
12 
19 
20.6 
21. 8 
July 20 
4 
June 27 (C. H.) 
17 
18 
20.2 
22.3 
Ikatan Bay: 
June 27 (B. V.) 
11 
18 
19.6 
23 
June 18 
14 
24 
23. G 
14 
July 4 
10 
14 
17. 1 
26.3 
July 1 
14 
16 
17.8 
18. 5 
8 
14 
15. 4 
29. 2 
July 2 
12 
18 
15 
22 
Morzhovoi Bay: 
July 10 (P. A. F. trap 
J une 20 
15 
19 
24.2 
14. 5 
No. 13) 
5 
12 
12. 5 
26.4 
June 30 (trap No. 8)... 
12 
16 
17 
20.6 
July 10 (P. E. H. trap 
June 30 (trap No. 5)... 
15 
17 
16.3 
22.9 
No. 5) 
4 
10 
12.1 
27.2 
July 8 (trap No. 3) 
7 
13 
14.2 
24.6 
July 11 
4 
11 
11.2 
29.5 
1 Based on median time and considering the distance to Bristol Bay from Unga Island as 450 miles, from Morzhovoi Bay as 
350 miles, and from Ikatan Bay as 330 miles. 
Note. — When two experiments were started on the same date, the traps are indicated. 
I 5 10 15 20 25 30 5 10 
JUNE DATE OF TAGGING JULY 
Fig. 10. — Showing time required for red salmon to travel from Unga Island to Bristol Bay 
Having established the fact that the rate of travel increases markedly during 
the season, it remains to determine what the average rate of travel is at different 
times. The data given above in connection with the discussion of the comparative 
rate of travel does not, of course, give the average time required, since we have 
considered only a certain variable percentage of the total number retaken. In the 
case of at least the first few experiments it may be assumed that the returns from 
Bristol Bay were complete and were not affected by the closure of the season. 
