52 The Natural History of the Salmon. 



thought that from such men, so continuously em- 

 ployed in observing these fish, something definite 

 might have been expected, yet the Stormontfield 

 and later experiments prove how unreliable is the 

 evidence from these inquiries. 



However, all state that the three species Salar, 

 Eriox and Trutta go down to the sea after spawning, 

 or at any rate into the brackish water, and remain 

 there for a certain time, and then either go further 

 into the salt water or return to the river. 



In Dr. Giinther's report to the Commissioners, he 

 gives four kinds of the Salmonidae frequenting the 

 Tweed. 



1. Salmo salar. 



2. Salmo trutta^ known by the various popular 

 names of sea trout, bull trout (phinok), whiting or 

 whitling, herling. 



Dr. Giinther considers the bull trout a variety 

 only of the Salmo trutta. 



3. Salmo brachyopoma ; this, he says, is one of 

 the best marked species of Salmo, but it is very rare, 

 only nine examples having been noticed by him. 



4. Salmo fario, or common river trout. 



He also states that in the Beauly River there 

 is a hybrid between the salmon and the sea trout, 

 which in that river is called a bull trout ; and in 

 his " Introduction to the Study of Fishes," he 

 enters more fully into the subject. Although many 



