52 
ON THE CLASSIFICATION OF' BIRDS. 
surpassingly grand and wonderfully minute. The 
Other analogies in this table are too obvious to require 
pointing out. 
(58.) Let us now compare the subgenera of SyU 
vicola with those of Parus, It will be remembered, 
that these two are the typical groups or genera of the 
subfamily Parianw, and that each contain five sub- 
genera. Now, if these are disposed in their natural 
series, each of these subgenera will mutually pos- 
sess a strong and peculiar resemblance to each other, 
so that, in fact, the subgenera of Sylvicola will con- 
tain representations of the subgenera of Pants. To 
this test, every group or genus, thought to be natural, 
must be brought. Now, that this is not only true in 
regard to the birds in question, but wonderfully regular 
and beautiful, when developed, the ornithologist will 
perceive, on studying the following table : — 
Syiatgola, 
subgenera. 
Analogies. 
Parct, 
subgenera. 
Vermivora. ^ 
Sylvicola. 
Domecola. ) 
Bil! lengthened, conic, very acute, entire ;■)« 
rictus smooth. J 
Rill shorter, much compressed ; rictus with ) 
weak bristles. J 
Bill depressed; feet lengthened; rictus 7 
bristled ; wings rounded. } ^ 
ZOSTEUOPSI. 
BUI gradually pointed, notched remotely^ 
from its tip ; nostrils naked ; theaperture t Hylopiuu;s. 
linear ; foot strong. J 
Mkiotilta. 
- 
. 
Cetoiseau (Egithina leiicoptera) pr^sente.l 
au premier apper^u, des rapports avuc la 1 
Fauvette des Sapins (Mnioiilta piiius) ; 1 
mais il cn diff^rc assez pour le designer j 
coinmeunccsp^cedistincte.”— Piri/. Ots. 
d'Am. t. ii. p. 28. J 
Egithina. 
( 59 .) To pursue this subject further would he 
almost needless, since the test we have thus apphed to 
the contents of both groups, demonstrates their natural 
arrangement. By referring to the preceding table of 
the analogies of the five subgenera of Sylvicola, the 
naturalist will perceive that, in these two genera, nature 
preserves the same laws by which she has regulated her 
primary divisions of matter. "We have in each three 
primary circles, which, when compared with the three 
