— 165 — 
Under such distinctly marked con- 
ditions as those indicated by these age 
determinations, it was natural that the 
measurements should show great fluctuat- 
ions in the stock. The material furnished 
by the English and German research 
vessels is thus of particular interest; I 
therefore give, in Fig. 101 (drawn by 
HertLAnD-HANsEN), the average weight 
and number of individuals of the different 
centimetre sizes in the samples. The verti- 
cal lines also indicate the limits for the 
different market classes of haddock, 1. e. 
between extra small, small, medium and 
large, the principal classes in the English 
trade. We see from the figure that the 
fish were large in 1903 and 1904, more so 
in the latter year. In 1905, a number of 
quite small fish, between 15 and 20 cm., 
made their appearance; these were, in 
1906, between 20 and 25cm. long. Even 
before the conclusion of the work of the 
Commission, in 1906 and 1907, it was 
evident that these fluctuations were also 
to be felt in the yield of the fishery. Thus 
the English fishery statistics showed an 
increase in the catches of small haddock 
in the autumn of 1905. That was some 
years ago, and it is now interesting to 
note the statements of the fishery statistics 
for the intervening years, although un- 
fortunately, I have no material from age 
investigations during this period. The time 
and assistance at ny disposal have been too 
fully occupied to permit of my undertaking 
the work. Inspite, however, of the fact that 
no biological material is here available, the 
figures for haddock landed in England (in 
millions of kilos) should be of considerable 
interest, and will be found (quoted from the 
English authorities) in the following table: 
Year “Small” 
Too See 66.3 
NOT 61.0 
EXTRA SMALL LARGE 
| SMALL | MEDIUN: 
a 20 25 À — RE em 
Fig. 101. Average catch of haddock by the re- 
search steamers pr. trawl-hour for all portions of 
the area examined, during the different years in 
which investigations were made. 
---- average numbers. 
average Weights. 
(drawn by HELLAND-HANSEN). 
“Medium” “Large” 
13.2 22.6 
16.7 30.0 
