ON THE CLASSIEICATION OF BIRDS. 
every point in which he can he of service; he should 
be allowed to ward oiF, and to correct from time to 
time, all that may tend to deform and enfeeble his great 
object ; he will have to choose between names of the 
same date, “and even between good and bad ones of any 
date. Without in the least presuming to arrogate 
this authority to ourselves, we still, however, feel 
bound to make our humble labours subservient to the 
spirit of these observations ; and in the following Syn- 
opsis we have endeavoured to act accordingly. IFe 
further trust, that as many of our own generic names are 
in the rejected list, the pimity of our motives in respect 
to the others will not be doubted, however we may be 
thought in error as to particular rejections. 
(222.) In conclusion, we have used the following 
abbreviations to designate the chief part of those works 
we have quoted, the full titles of which have been given 
in our First Volume. 
Lev.Af.,orOis.d’Af.,l . 
or Ois. A. - -I Vaillant’s Oiseaux d’Afrique. 
PI. EnL, or P. E. - Planches Enlumin^es. 
PI. Col., or P. C. 
Wilson, or Wils. 
White, Voy. 
Lewin, or Lew. 
Selby 
- Planches Colorees. 
- Wilson’s American Ornithology. 
- White’s Voyage to New South Wales. 
- Lewin’s Birds of New South Wales. 
- Illustrations of British Ornithology. 
111. of Orn., or 111. O. / and Selby’s Illustrations of 
„ 1 Ornithologv. 
- Century of Hymalaia Birds. 
1. Ill, or Z. I. - 1 ^“logical Illustrations, i. ^6rst series) 
L 11 . (second series). 
• Introduction to Botany, 2d ed. p.3S3. 
- Nortliern Zoology, vol. ii. 
Zool. liL, or Z. I. 
