— 29 — 
mination investigations for the year class 1904 in all the samples of spring herring exa- 
mined during the years 1907—1913. The table shows, as above, the percentage of the 
year class in the whole sample, in addition to which, the place and time of capture are 
also noted. The table includes 19 samples in all, embracing a total of 7,092 fish. The 
chart Fig. 17 will serve to better locate the place of capture. 
Percentage of individuals belonging to year class 1904 in the 
samples of spring herring for the years 1907—1913. 
| 
| | No. of | lo of 
No. of | Year of | ; | 
| Month | Place of capture | specimens | year class 
sample | capture! | el 1904 
1 | 1 March | Bommelo | 375 21 
Ne | — | Gjeitung 275 11 
St a | = Espevær 274 1-5 
4 | 1908 | February | Foina 881 15.9 
5 | = | Ami | Korsfjord 549 65.2 
6 | 1909 February | Kalvaag 200 | 46.5 
7 — . | March | Kalvaag 368 42.2 
8 1910 March | Kinn EU IN ME 
9 — — | Kinn | 199 | 76.4 
10 1911 | January | Korsfjord | 303 70.2 
11 — | February Haugesund | 380 | 68.7 
12 — April Nordre distrikt | 361 | 712 
13 1912 March | Boku | 376 | 646 
I | = = | Flekkefjord 259 55.6 
15 — _ Haakelsund | 310 61.6 
16 — | April Askevold | 297 | 75.4 
17 1913 March À Flekkefjord 329 | 60.5 
18 — | April Korsfjord 225 70.2 
i _ — | Yttre Sulen 336 63.4 
Total, in 19 samples, 7,092 individuals. 
In studying this table, the samples for each year of capture must naturally be com- 
pared one with another. It will then be seen, that for each year, with the exception 
of 1908, a most remarkable agreement is apparent. A graphical representation of the 
figures for the four years 1910—1913 shows the percentage for composition in point 
of age of each single sample; the four figures 18—21 give the samples for each year of 
capture separately, for purposes of comparison. It will be seen at a glance that the 
composition in point of age for all of these years reveals the most accurate agreement 
between the different samples. In 1913, for instance, a sample was taken at Flekke- 
fjord, one at Korsfjord, and one at Yttre Sulen, each consisting of 200 to 300 fish. The 
distance between Flekkefjord and Yttre Sulen is over 200 miles, and shoals of spawning 
spring herring were found throughout the whole of this range. The fact that such small 
samples, taken at such a distance apart, should exhibit so great similarity as regards 
composition in pomt of age, can only be regarded as marvellous. The only possible 
