ite tsalmen 67 
maintain they do. This must be entirely exceptional, as I have 
seldom found it in natural-bred smolts from which I have obtained 
my information. The scales I studied were mostly taken from 
smolts caught in the tidal water, and these were true smolts pro- 
ceeding towards the sea. I have also taken scales from smolts 


Fic, 63.—104 lbs. 18th August 1906. Marked as Smolt May 1905. 
40 miles from the sea and found no difference in them. Many parr 
migrate to the sea long before the real silvery coat comes on them, 
so that it is difficult to tell whether they would become smolts that 
season or not. All parr and even trout in April and May become 
quite silvery, almost like smolts. In fact, quite as great a change takes 
place in the parr when passing from its winter to its summer dress 
as that which takes place when changing from the parr to the smolt 
stage. Smolts that are confined in fresh water after assuming 
