296 Roosevelt Wild Life Bulletin 



fry or fingerlings, but it is fairly certain that they were not put 

 into these little streams. The point is that fingerling lake trout were 

 in a rivulet and small brook and were feeding upon insect larvae 

 and insects. In an effort to ascertain the habits of young lake trout 

 in Lake George or elsewhere it may be well to search the small 

 brooks flowing into the lake. It is well known that salmon and 

 brook trout fingerlings, hatched in a larger stream, make their way 

 into smaller tributary brooks and rivulets where they remain until 

 they have attained a considerable size. 



A good example of a " deep water " fish having like habits is 

 that of the Burbot {Lota maculosa). The present writer found 

 young of this species, 1.9 to 2.45 inches long in spring pools of a 

 small spring brook in a hay meadow on Indian Stream in the Con- 

 necticut Lakes region. The brook at this time was not connected 

 with Indian Stream (a tributary of the Connecticut River below 

 First Connecticut Lake), but doubtless had been during higher stages 

 of water. In the same region young of the same species, from 2.75 

 to 6 inches long were taken in East Inlet of Second Connecticut 

 Lake. The stomachs and intestines of all these young fish contained 

 a variety of food consisting of fragments of insects, larval insects 

 (" black fly"), Entomostraca and mites. Young burbot have been 

 found in brooks of various other localities. 



While the burbot affords no direct evidence concerning the lake 

 trout, the above facts are mentioned to indicate that although the 

 lake trout is a " deep water " fish which spawns in the lake, the 

 young are not necessarily deep water inhabitants. 



Rainbozv Trout. Bean says that this is a native of the mountain 

 streams of the Pacific coast, where it occasionally descends to the 

 lower stretches of the rivers and even passes out to sea. He states 

 that its food as well as its habitat is similar to that of the brook 

 trout and that both fishes will five in harmony in the same waters, 

 but that the rainbow seems to show a tendency to work down- 

 stream, passing over dams and falls that it cannot ascend again, 

 thus abandoning the headwaters. He goes on to say that it has 

 been introduced with great success into lakes that are landlocked, 

 so that it cannot escape, but that such lakes should have small tribu- 

 tary streams up which the rainbow can run to spawn. 



Embody ('22) indicates that rainbow trout will live in waters 

 where the temperature ranges upwards of 85 degrees and suggests 

 that there is good evidence for believing that it will do well in waters 

 the oxygen content of which is a little lower and where pollution 

 is a little greater than is the case with brook trout. He says : 

 " Resistance to high temperature and to certain conditions fatal to 

 brook trout makes it possible for the sportsman to stock many 

 streams with brown and rainbow trout which would otherwise con- 

 tain only minnows and suckers." 



Again referring to the rainbow trout. Embody says : " There is 

 another factor to be considered in the case of that fish and that is 

 the migratory instinct. The practice of introducing rainbows in 



