1^ 



S ALMONIDES. 



States, which has not the common trout, as it is 

 called, by every body, and yet, on examination, 

 the external characteristics are as different as pos- 

 sible ; but the difference consists in the arrange- 

 ment of spots and color, rather than in the organ- 

 ization of the branchiae or disposition of the fins. If 

 we go to the lakes, still farther to the north, they 

 also have the common trout, which, compared w^ith 

 the river trout, are codfish by the side of minnows. 

 This difference in complexion and size, is brought 

 about In the opinion of the learned author just quo- 

 ted, by the quality and quantity of food, the wa- 

 ter, Sic. ; — these developments, whatever they 

 may be, ^* are transmitted to the offspring, and 

 produce varieties which retain their characters as 

 long as they are exposed to the same circumstan- 

 ces, and only slowly lose them." 



FRESH WATER TROUT. 



Plenty of good food gives a silvery color and 

 round form to fish, and the offspring retains these 

 characters. Feeding much on larvee, and on shell- 

 fish, thickens the stomach, and gives a brighter 



