— Aes 
In the years 1904—1906 the yield of the fishery was, as will be seen, unusually low. 
In 1907 an increase began, continuing through 1908 and 1909, and culminating in the 
last named year. These figures agree very well with the supposition that there has been 
a rich year class in the North Coast waters which was especially noticeable in the years 
1908 and 1909. It also agrees with the fact that the two previous year classes, 1902 
and 1903, were very poor; these would otherwise have been most prominent in the yield 
of the years 1905 and 1906. 
Fluctuations in the weight of spring herring. 
The large and spring herring are not classified under the same marks as the fat her- 
ring. During the fishery, the telegrams state how many herring go to a “barrel mea- 
Large herring Spring herring 
Length | | - 
in cm. Average No. pr. | No. pr. | No. pr. ENCRES No: pr. | No. pr. | No. pr. 
Ne | ee | ig) loons: |e! eed a ae 
| in gr. in gr. 
27 fe co) de | ee 1 8D | ee || En) Gao 
28 163 6.1 | 244 | 610 | 147 | 7 28 700 
29 169 6 | 24 | 600 | 163 | 6 24 600 
30 187 52 | 20.8 | 520 183 5.5 | 22 550 
31 199 5 | 20 | 500) 190 5.3 21 530 
32 213 | 4.7 | 188 | 470 || 211 4.7 19 470 
33 250 | 4 | 16 | 400 || 229 | 44 | 18 | 440 
34 PARA Poesia ete APE LU ES 4 16 400 
sure” (150 litres) and in the salt fish trade it is generally stated how many herring go 
to make up a weight of four kg. The table above shows a comparison of the relative length 
and weight of large and spring herrings. The large herring are, as will be seen, heavier 
at the same length than the spring fish, bemg fatter than these last; the difference is, 
1907 08 09 10 11 12 13 1910 11 IR 13 90 11 12 13 
ie 2. 3. 
Fig. 26. Average volume and weight of spring herring in different years. 
. Average volume (in em) of spring herring, according to statements of the fishery authorities. 
— weight (gr.) of samples scientifically investigated. 
= = — of fish of 1904 year class in these samples. 
bo 
(Se) 
