How to obtain it. 249 
few years ago would have availed ourselves of such an opportunity 
had it been possible. 
The natural food of yearlings, as indeed of fry, may be largely 
augmented by the introduction of various insects in their larval 
forms, not only as regards those which inhabit the water, but also 
the soil and its vegetation, and a study of flora and fauna therefore 
becomes very desirable. This applies not only to rearing or 
nursery ponds but to streams and lakes, which may often be very 
materially improved by the introduction and culture of certain 
forms of life which were formerly non-existent therein. As 
applied to our natural waters this subject becomes, then, an 
exceedingly important economic question, which is well worthy of 
the study and thought which is being given to it. Some of our 
winged insects simply abound in their earlier stages in certain 
localities, and under peculiarly favourable conditions. To supply 
these conditions in contiguity to our fish ponds is a work of great 
importance, but which has as yet hardly been entered upon. 
Whilst bearing in mind the value of winged food, the more 
substantial and solid organisms should not be overlooked, such 
as mollusca and crustaceans. These play a most important part in 
the development of fine fish, and also tend to the introduction of 
that delicate pink tinge of flesh which is so much admired, and to 
a richness of flavour which is unmistakeable. That the food 
of fishes has much to do with the flavour of their flesh, fish 
culturists know quite well. It affects them just as much as the 
flesh of animals is affected by their food, and experience teaches 
that a variety of it is the best. It is natural that any animal 
should be benefited by a mixed diet, and that it is the case with 
the Sa/monide, especially when they get older, there is no room 
for doubt. 
Where large quantities of fish are dealt with it is desirable to 
use a certain quantity of artificial food. In conjunction with a 
good amount of natural food the artificial supplies are beneficial, 
and with due care in its distribution and a good flow of water 
the fish at this stage should give very little cduse for anxiety. The 
daily routine of feeding them as their meal times come round, 
cleaning the screens, and attending to the water supplies, is the 
constant work of their attendant, and very interesting work it is to 
