Aberdeen Fishery Statistics. 25 
STATISTICAL TABLES. 
I. Epitomised Tables of the Catch landed at Aberdeen, in 1912, by 
British and Foreign Steam Trawlers. 
Note.—The figures here given are not identical with the official returns 
for the Port of Aberdeen, set forth in the Board’s Annual Report for 
1912, pp. 83, 84. The greater part of the Scottish landings by 
Foreign Vessels (pp. 118, 119) also refer to the port of Aberdeen, 
and these foreign landings are here included. Secondly, as_ has 
been explained in our Fifth Report on North Sea Investigations 
(1913, p. 207) the method of estimating the weight of certain fish 
has, since 1909, been altered, in the direction of greater accuracy, 
in the Official Report; but here, for the sake of uniformity and 
comparison, {he method in use in earlier years is still retained. It 
must be carefully understood that the weights given in these Tables 
are based on estimate and not on actual weighings. Strictly 
speaking, these statistics are based on a unit of measurement, viz., the 
so-called hundredweight box, and not upon a unit of weight. 
In the total quantities dealt with, the discrepancy between these 
figures and those of the official returns amounts, after taking the 
foreign landings into account, to about 1°82 per cent. After further 
taking account of the difference of estimated weight, the discrepancy 
practically disappears, being reduced to about 0:05 per cent. 
