- XC^J 



■^ 



F'g- 38- — Scale of Sea-troiit, illustratino; period spent in the sea 

 after descent as a smolt and prior to return as a whitling. (x 39.) 



The fisli, a whitling, was caught in Loch Lomond on 4th September, 1914, 

 Weight, li lb. Length, 14-^ in. Age, 'i'^ years. The fish pi-obably descended as 

 a smolt in late May, had spent June, July and August in salt water, 

 and returned early in September. 



Sec page 119. 



