SALMON. 199 



to be four and seven tenths of the length of the body, which 

 measured forty-seven inches from the snout to the border of the 

 tail; from the snout to the beginning of the dorsal fin the 

 same as from the ending of that fin to the border of the 

 scales at the root of the tail; and from the commencement of 

 the dorsal to the adipose fin the space is double that from the 

 adipose fin to the border of these scales; the adipose fin is 

 over the anterior edge of the anal. The operculum and sub- 

 operculum taken together form a circle. Number of scales from 

 the dorsal fin to the lateral line twenty-five; from thence to 

 the ventrals twenty-two; and in a row between the adipose fin 

 and lateral line twelve to fourteen. In the female fish the 

 number of scales was less than in the male, although the body 

 is higher; the head occupied five parts and one third of the 

 length of the body. Artcdi counted fifty-six vertebrae, but Mr. 

 Yarrell more than once counted sixty. The colour of the flesh 

 is found to be caused by the presence of a peculiar oil. 



