80 SCIENCE SKETCHES. 
bird is like the bobolink. Gross feeding and easy pond 
life enervate and deprave him. The trout that the chil- 
dren will know only by legend is the gold-springled living 
arrow of the white water; able to zigzag up the cataract ; 
able to loiter in the rapids; whose dainty meat is the 
glancing butterfly.” 
The brook-trout adapts itself readily to cultiva- 
tion in artificial ponds. It has been successfully 
transported to Europe, and is already abundant in 
certain streams in England and elsewhere. 
The “ Dolly Varden” Trout (Salvelinus malma) 
is very similar to the brook-trout, closely resem- 
bling it in size, form, color, and habits. It is 
found in the streams of northern California, Ore- 
gon, Washington, British Columbia, Alaska, and 
Kamtschatka, mostly to the westward of the Cas- 
cade Range. It often enters the sea, and specimens 
of eleven pounds’ weight have been obtained by the 
writer in Puget Sound. The Dolly Varden trout 
is, in general, deeper in body, and less compressed 
than the Eastern brook-trout. The red spots are 
found on the back of the fish as well as on the 
sides, and the back and upper fins are without the 
marblings and blotches seen in Salvelinus fon- 
tinalis. In value as food, in beauty, and in ga- 
miness, Salvelinus malma is very similar to its 
Eastern cousin. 
Allied to the true charrs, and now placed by us 
with them in the genus Sa/velinus, is the Great Lake 
Trout, otherwise known as Mackinaw Trout, Longe, 
or Togue (Salvelinus namaycush). Technically, 
this fish differs from the true charrs in having on 
its vomer a raised crest behind the chevron, and 
