THE MOmTAlK GOAT. 289 
still common in the less accessible summits along the upper 
Missouri and Yellowstone rivers, as well as the mountains 
of Wyoming and Montana. 
In the same, though higher and more inaccessible situa- 
tions, lives the rare mountain goat (Aploceros montanus), 
whose horns are jet-black and polished, slender and coni- 
cal. It is found sparingly in the higher summits of the 
