THE ANTELOPE OF AMERICA. 
CLASSIFICATION. 
ACCORDING to the arrangement of Cuvier the Eighth Order 
of Mammalia is the 
RUMINANTIA 
These are all distinguished by two peculiar and invariable 
characteristics : — : 
First. They have no incisors in the-upper jaw, and 
Second. They all re-masticate their food. 
Other peculiarities, not observed in the other orders of the 
mammalia, are found in a part of the Ruminantia; by which 
these may be separated into divisions or classes; to some of 
which, naturalists have already given appropriate and convenient 
names; but as we study them and better understand their pe- 
culiarities, we feel constrained to make changes in these classifi- 
cations by enlargement, diminution, or transposition. 
This order may, with propriety, be separated into two impor- 
tant groups : — 
First. Those which have horns or their equivalent, antlers ; 
and 
Second. Those which are without these appendages. 
The first of these may be represented by the ox, the antelope, 
the goat, the sheep, the elk, and the like; while the second em- 
braces the camel, the llama, the musks,.some of the chevrotians, 
etc. 
As we study them still more we feel constrained to further 
classify the first group into divisions, as follows : — 
First. Those which have hollow horns, all of which are epi- 
dermal emanations; and 
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