222 DOMESTICATED TROUT. 



On the other hand, if you are in the habit of calling 

 the trout with a bell to be fed, and have found that 

 they come at the ringing of it, go to the pond some 

 day at feeding time with the tongue taken out of the 

 bell, and shake it as usual. The trout will come to be 

 fed exactly the same, though not a sound is made. 



The nerves of smell in trout are large, and the sense 

 of smell is probably well developed. Hence the use 

 of fragrant oils and strongly scented bait in fishing for 



trout. 



HABITAT. 



Brook trout abound chiefly in cold, swift-running 

 gravelly brooks ; but they thrive in all pure cold wa- 

 ters which contain sufficient air. Hence brook trout 

 are found in many ponds and lakes, which apparent 

 contradiction of terms has frequently led to confusion 

 among those unfamiliar with fishing. I may be, there- 

 fore, excused for saying, by way of explanation, that 

 the name " brook trout " is not confined to trout caught 

 in brooks, but applies to all of the varieties of Salmo 

 fontinalis, whether found in brooks, ponds, lakes, or 

 rivers. Their range is very extensive, covering a wide 

 belt from one end of our continent to the other. In 

 phrenological language, their locality is very large, 

 which gives them a strong attachment to places. In 



much acoustic apparatus as constituted the central portion of the 

 ear in man, viz., the vestibule and semicircular canals, but the 

 whole is boxed up in the solid bones of the skull, so that sound 

 propagated through the water gives a vibrating motion or tremor 

 to the whole body, and which, agitating the auditory nerve, pro- 

 duces the sensation of hearing." 



