7/3 — $5


66 THE UNITED STATES BUREAU OF FISHERIES


conomie results of great value have come from the transplanting of native
aquatic animals into waters in which they are not
indigenous and from the introduction of fishes of
foreign countries into the United States. The supply of food and game fishes
of every section of the country has thus been increased and enriched, fisheries
of vast extent have been established, and the pleasures of angling have been
greatly enhanced.
Acclimatization


BIRD’S-EYE VIEW OF LEADVILLE, COLORADO, HATCHERY


This station, 10,000 feet above sea level, in the Rocky Mountains, is devoted to the culture of the black-spotted, rainbow
brook, and other trouts.
In all the waters of the eastern, central, and southern parts of the United
States the range of every important native food and game fish has been
extended artificially. Especially extensive work has been done with the black
basses (Micropterus), the crappies (Pomoxis), the rock bass (Ambloplites), the
sunfishes (Lepomis), the brook trout (Salvelinus fontinalis), the lake trout (Cris-
tivomer namaycush), the landlocked salmon (Salmo sebago), and the catfishes
(Ameiurus and Ictalurus). Among the more conspicuous examples of this class
of work has been the stocking of the Potomac River with black basses, crappies,
and catfishes.
