The Salmon 74 
would be on the rst of June, but we have every reason to believe that 
it would be of the same weight as those that come up in June; and 
owing to the growth being greater in summer than in winter, 
twice as much weight is added during the former season. This is 
seen all through their life-history. The grilse are small when they 






Fic. 69. —103 lbs. 15th March 1907. 
first appear in summer, but by the end of autumn they have 
increased to four times the weight. The same thing happens with 
the small spring run. They weigh about 5 Ibs. to begin with, and 
go on increasing until they are 12 or 13 lbs. The increase in weight 
here, however, is not so pronounced, because this run ceases by the 
middle of June. 
In the next run, however, the weight increases much more quickly, 
L 
