J , . 
| RASORES. —— ANALOGIES. 159 
the more aberrant divisions, as the guans and pigeons, 
reside in forests and nestle in trees. 
(180.) The analogy of the rasorial birds to the 
ruminating quadrupeds has been so fully investigated 
in the preceding volumes of this series, that we shall 
now merely bring before the ornithologist the results 
of our analysis of the two groups. Independent of 
their general analogies, which they exhibit as a whole, 
it appears from the following table, that even the pri- 
mary divisions of each possess separate analogies, readily 
understood by those who are acquainted with the two 
classes. 
Anauoeiss of the Rasoriau Brrps with the UNeuLATED 
or HooFED QUADRUPEDS. | 
| Primary _ Families of the Analogical Families of the 
Ciréles. Rasores. Characters. Ungulata. 
Typical. PAVONIDE. Tail excessively long. SOLIPEDES. 
Subtypical. TETRAONIDEA. Tail very short. RUMINANTES, 
{ CRACIDA. Semi-aquatic. ANAPLOTHERES. 
CoLUMBIDS. Jaws prolonged, slen- 
ae | der 3 feet very short. F EDENTATES. 
( Size large; hair or fea. 
STRUTHIONID&. thers very thin ; skin } PACHYDERMES. 
d thick; toes very few. 
(181.) The peacock, as the pre-eminent type of the ra- 
sorial structure, has the longest and most elegant tail of 
any bird in creation ; and this is precisely the distinction 
of the horse among quadrupeds, of which it is the pre- 
eminent rasorial type. The most beautiful crests are 
found among the rasorial birds ; while the hoofed quad- 
rupeds are those only which have crests in the shape of 
horns. It is well known that the ruminating order is 
eminently herbivorous; and the Rasores, in a state of 
nature, are the only birds which eat grass. The types of | 
both orders live entirely upon the ground, for only. part 
of the Rasores roost upon low trees. Both are the most 
gregarious of their respective classes, not in one or two 
instances only, but with scarcely any exceptions. The 
Ungulata have the fewest toes of any quadrupeds; and 
this, in regard to birds, is a grand characteristic of the 
Rasores, where we have the family of ostriches actually 
