EXPLORATIONS IN YELLOWSTONE NATIONAL PARK, 
56 
Both seemed to be free from worms. There is no evidence of hot- water action in Eid- 
dle Lake, The temperature of the lake is about 50°. 
Bridge Bay Creek is a small brook of no importance. 
Ariiica Greek is a similar stream, the water of which is warmed by hot springs. 
No trout were seen there. 
Trout Creek is a clear stream with grassy banks and gravel bottom. Water clear 
and clean, about 58°. Its course lying chiefly in Bayden Valley it has no falls. No 
fish were seen, although it is said to be a fair trout stream but inferior to the next. 
Both of these enter the Yellowstone Eiver from the west some 12 miles below the 
lake. 
Alum Creek is a clear stream about 8 feet wide and 1 or 2 feet deep, rising in the 
Continental Divide opposite the head of Nez Perce Creek and flowing eastward through 
the grassy fields of Hayden Valley. Its bed contains much white alkali from the hot 
springs above and there is a perceptible alkaline taste to the water. Its temperature 
is about 60°, In its upper course it has some hot tributaries, one of these, Violet 
Creek, with a number of hot springs and mud-holes. Still another fork is charged 
with alum. A third branch is said to be one of the best trout streams in the park. 
One small trout was noticed while fording this stream, a fact which tends to show 
that alkaline and warm waters are not specially avoided by trout. 
Sour Creek, a large stream, entering the river opposite Alum Creek, was not exam- 
ined nor was the cause or degree of its sourness made out. 
Cascade Creek, a clear brook about 3 feet wide, enters the Yellowstone between 
the falls. The high, nearly vertical “Crystal Palls” (129 feet) is near the mouth of 
the stream and, of course, prevents the ascent of fishes (see plate XIV). It is said 
that fifty trout from the Yellowstone were placed in Crystal Lake, a pond toward the 
head of this stream, last spring by Mr. Cummings. The planting of Yellowstone trout 
in streams without trout has been since forbidden on account of the danger of the 
spread of the parasitic worm. 
Stilphur Creek, a small clear stream having in its course numerous sulphur springs 
and boiling sulphur holes, flows into the grand canon. It has, of course, no fish. 
Another small stream. Surface Creek, with a very high cascade, “ Silver Cord,” flows 
into the canon from the opposite side. 
Lamar River, or east fork of the Yellowstone, is a large stream, flowing into the 
Yellowstone from the east at a point below its canon. 
This is well stocked with fish, as are its tributaries, the chief of which are Slough 
Creek and Soda Butte Creek. These streams were seen by us only from a distance. 
At Baronette’s Bridge, at the mouth of Lamar Eiver, a trout was taken which weighed 
4 pounds 4 ounces, when dressed. It was 16 inches long. 
Slough Creek is said to be well stocked with fishes up to the lakes at its head which 
is near tbe mining camp of Cooke City, Mont. One of these lakes is said to be with- 
out trout on account of the presence of much iron in its outlet, so much that the bottom 
is red. Another has no trout but multitudes of hloh^^ {Gottus bairdi 2 >unctulatus). 
This stream has a small water-fall in its outlet. Still another, “Lake Abundance,” 
is said to be full of trout. 
Soda Butte Creek is well stocked with fish except in its upper part where a water- 
fall keeps them back. 
Hellroaring Creek flows into the Yellowstone from the north below the mouth of 
