210 



THE ROYAL SOCIETY OF CANADA 



QUALICUM 



Nanaimo 



QUALICUM AND NaNAIMO 



The regularity in the growth of these fish is quite striking. Tak- 

 ing the averages, the growth in length for each year is almost exactly 

 three-fourths that of the preceding year. Thus the growth in the 

 second year is 72-2 per cent that of the first year; that of the third 

 year, 74-4 per cent of the second year; that of the fourth year, 74-1 

 per cent of the third year and that of the fifth year, 79-1 per cent of 

 that of the fourth year. In this species, if not in any of the others, 

 there seems to be a very definite relation between size and time of 

 maturity. In any and every year's growth, the average early matur- 

 ing fish is larger than the later maturing. This cannot be due to a 

 difference in food supply unless the supply is getting greater or more 

 easily obtained each year. 



In comparing the Qualicum and Nanaimo salmon, it will be ob- 

 served that the early growth of those from Qualicum is slightly less 



