2 SALMONIA. 



manner as in the variety of dogs, which may 

 all be referred to one primitive type.* 



* I have known the number of spines in the pectoral 

 fins different, in different varieties of trout; I have 

 seen them 12, 13, and 14 : but the anal fin always (I 

 believe) contains 10 or 11 spines. The smallest brook 

 trout, when well and copiously fed, will increase in 

 stews to four or five pounds in weight, but never at- 

 tains the size or characters of lake trout. 



Mr, Tomkin of Polgaron put some small river trout, 

 2J inches in length, into a newly made pond. He 

 took some of them out the second year, above 12 

 inches in length ; the third year, he took one out of 

 1 6 inches in length ; and the fourth year, one of 25 

 inches in length : this was in 1734. (Carezvs Survey 

 of Cornwall, p. 87.) 



