20? U. 8S. BUREAU OF FISHERIES, 
cumstance that the road follows the stream for many miles, and 
there must have been thousands of anglers fishing there in 1919, 
according to the senior author’s notes of July, 1919. Grebe Lake, 
Blacktail Deer Creek, Madison, Firehole, and Little Firehole Rivers 
all contain rainbow trout. Referring to the last-named stream in 
1897, the superintendent of the park wrote that several good speci- 
mens had been taken near its source, for which he could not account, 
as it seemed impossible for any fish to ascend the lower falls of the 
Little Firehole. A. H. Dinsmore reports the fish from Tower Creek 
above the falls. 
Many persons who have had experience in angling for rainbow 
trout say it is one of the best, and some pronounce it the very best, 
of the trouts. It often dashes from the water to meet the descending 
fly and leaps repeatedly and madly when hooked. It has been said 
that it takes the fly so readily that there is no reason for resorting to 
other lures. However, its activity and habits, as in the case of most 
fishes, are modified more or less by its surrounding conditions, The 
same is true of its food qualities, which ordinarily are very good. 
Fic. 4.—Rainbow trout. 
Mary Trowbridge Townsend (I. c.) had the following to say relative 
to her experience with the rainbow trout in Firehole River: 
The California rainbow trout proved true to his reputation as absolutely eccentric 
and uncertain, sometimes greedily taking a fly and again refusing to be tempted by 
the most brilliant array of a carefully stocked book. During several days’ fishing we 
landed some small ones, none weighing over 2 pounds, although they are said to have 
outstripped the other varieties in rapidity of growth, and tales were told of 4-pounders 
landed by more favored anglers. 
5. ScorcH LAKE Trout; Locn Leven Trout (Salmo levenensis). 
This trout originated in Loch Leven, the lake made famous by 
Scott’s poem, ‘‘The Lady of the Lake.” Typically it was peculiar to 
this tate where it seldom if ever attained much over 1 pound in 
weight. The claim has been made that it is merely an ontogenetic 
development of the common brown trout, and that when transferred 
to other waters its progeny can not always be distinguished from the 
common brown trout. On the other hand, information derived 
from persons familiar with Loch Leven indicates that both this trout 
and the brown trout exist in the same lake, and that in that body of 
water they can always be distinguished. 
