How to obtain tt. 273 



have previously been unacquainted, but on being compelled by 

 hunger to eat it afterwards become ravenously fond of it. 



In cases where trout have absolutely refused some (to them) 

 new kind of food, and it has not been expedient to break them on 

 to it by hunger, I have done it by mixing a little and increasing 

 by degrees, and then diminishing the quantity of the old food, and 

 they have thus been beguiled into eating the new. It is quite 

 evident that they have their likes and dislikes, as is shown by 

 their rejection of one bait whilst they eagerly take another. 

 Domesticated trout are fond of frog tadpoles, but dislike those of 

 toads. There is a foetid odour about toads which does not exist 

 on frogs, and the trout can at once tell the difference. It is quite 

 probable that the sense of smell has much to do with this as well 

 as taste. 



The great variety of colour and marking which exists amongst 

 trout must have struck everyone who has had much to do with 

 them. There are many influences at work, each of which produces 

 its own variety. Then, again, the blending of these influences, 

 and their consequent colouring, the crossing of different races, 

 hybridism, age, sex, good or bad breeding, migration, season, 

 food, surroundings, bottom, and last but not least the quality as 

 well as quantity of the water itself, to say nothing of exposure to 

 light or otherwise. All these and many other influences are at 

 work, making up an innumerable number of varieties, many of 

 which have been regarded by the older naturalists as distinct 

 species. 



Trout may be briefly divided into two kinds, viz., the 

 anadromous, or sea-going, and the fresh-water forms. Both are 

 more or less migratory, and therefore the terms " migratory " and 

 " non-migratory," which have been so often used, are not altogether 

 correct. Even some of the so-called fresh-water kinds are known 

 to go to sea occasionally. 



The question as to how many species of trout exist in Britain 

 is one that has evidently puzzled the ichthyological writers of the 

 past. The tendency has been to increase the number of species 

 as new types or races were discovered, and very naturally so, 

 considering the knowledge that was then possessed. But fish 

 culture has put a new phase on the subject altogether, and we are 

 T 



