PAR OR SAMLET. 



69 



and sea trout seem capable of changing per- 

 manently their places of residence ; and 

 sea trout seem often to become river trout. 

 In this case they lose their silvery colour, 

 and gain more spots ; and in their offspring 

 these changes are more distinct. Fish, like- 

 wise, which are ill-fed remain small ; and 

 pars are exceedingly numerous in those 

 rivers where they are found, which are 

 never separated from the sea by impassable 

 falls; from which I think it possible that 

 they are produced by a cross between sea 

 and river trout. The varieties of the com- 

 mon trout are almost infinite ; from the 



GREAT LAKE TROJJT. 



