American .Big-Game Hunting 
only to a limited degree, but probably they 
occur in somewhat larger numbers than is 
generally supposed. While they are migra- 
tory in habit, their requirements restrict their 
favorite haunts to limited and inaccessible 
areas, and they prefer swampy and boggy 
regions in the lowlands to the meadows and 
grassy parks of the uplands. They roam 
mainly in the southwest corner of the Park, in 
the Falls River Basin, a level country fed by 
innumerable streams and springs coming out 
from beneath the lavas of the plateau. As 
this basin lies partly in Idaho, beyond the 
borders of the Park, and the moose wander in 
and out of the reservation, their protection is 
a matter of great difficulty; yet it is important, 
not only on account of their scarcity, but be- 
cause it is near the southern limit of their 
range. They do not travel in large bands, 
and a country tramped up by moose is un- 
known in the Park. In many instances they 
have probably been mistaken for elk. I have 
detected their footprints in the broad valley 
of the Snake, below the mouth of Lewis 
River, and also in the Lower Geyser Basin, 
on Sentinel Creek, a small area, but one ad- 
258 
