44 DEPARTMENT OF THE NAVAL SERVICE 
7 GEORGE \V, A. 1917 
Going on the supposition that the fish that were first hatched during the season 
would, in general, have the greatest growth to the end of the first winter check, they 
were divided into three groups according to their lengths at that time. The first 
group included all those that were 3-0 inches or less at the end of the first winter 
check; the second included those that were over 3-0 inches and up to 3-5 inches; the 
third included those over 3-5 inches. The average growth in each case was as 
follows :— 
1st group—At end of 2nd year, oer 0; when caught, ne 6 
2nd “ “cc 4°1 Dole? 
3rd “e sc “ee pe “e 5°0 
The difference indicates that the fish that are the largest at the end of the first 
year, and hence probably those that were hatched out earliest, have an advantage 
that tends for greater growth throughout life. 
When the weight of the fish was compared with the length, it was found that 
there was a very definite ratio between length and weight. The youngest fish of 
which the weights were taken, or which enough weights were taken to make a com- 
parison possible, were those slightly over two years old, taken in April. From these 
the following table was obtained :-— 
NoOPOaADrO 
_ 
oO 
on 
oo 
_ 
In some cases there was but one specimen of the particular length, hence some 
irregularity is shown. This would probably be eliminated if there were several of 
that length from which to take an average. 
In comparing the weights of the mature fish, the males and females were taken 
separately, and those from Neah bay were separated from the others. 
In the table which follows there is some irregularity, as in the preceding table, 
due to the small number of specimens for certain lengths, more particularly towards 
the extremes of length, but even with these figures it is possible to see the definite 
relation between length and weight. There is very little difference between the weight 
of the male and the female for the same length. What difference there is, is in favour 
of the female. In comparing the Nanaimo fish with those from Neah bay, the latter 
have what little advantage there is. In both Nanaimo and Neah bay material, the 
males are at the head of the list for size, taking the whole size of the individial fish. 
