202 



THE ROYAL SOCIETY OF CANADA 



Fig. 16. — Humpback. 1st year growth. 



As all the fish were cf the same type and all of the same age, 

 there is not the same basis for comparison as there is in the other 

 species, but the differences in the Rivers inlet and Comox fish provide 

 material for comparison. 



In calculating growth rate, 1-6 inches is taken as the length of 

 the fry when the nucleus of the scale is formed. The calculations 

 give the following averages: 



The Rivers inlet fish are a full two inches longer than the Comox 

 fish, the excess being made up almost equally in the two years. The 

 scales of the Comox fish in general indicate a slower growth in the 

 early part of the first year, as though as fry they remained longer 



