III.
STREAMS.
[Map locations refer only to outlets, or to points where streams pass off the limits of the map. Altitudes refer to the same points, but are given only in the most important cases.]
Agate Creek—E : 10—1878—U. S. G. S.—Characteristic.
Alum Creek—H : 9—Name known prior to 1870—Characteristic.
Amethyst Greek—E : 12—1878—U. S. G. S.—Flows from Amethyst Mountain.
Amphitheater Creek—D : 13—1885—U. S. G. S.—From form of valley near its mouth.
Antelope Creek—E : 10—1870—Washburn Party—Characteristic.—This name is often applied locally to a tributary of the Yellowstone just above Trout Creek.
Arnica Creek—L : 8—1885—U. S. G. S.—Characteristic.