226 
ON THE CLASSIFICATION OF BIRHS. 
uniform in size^ of about twenty volumes ; for many 
of those of which the ordinary copies are in quarto^ liave 
been likewise printed in folio. They are all necessary for 
the consultation of ornithological writers, and for deter- 
mining the names of birds; hut their collective cost is so 
enormous, that few public libraries, or private indivi- 
duals, would think of expending such a sum on books 
belonging only to one department of natural history. 
There are, nevertheless, not wanting, even in diis country, 
individuals who enrich their libraries with a selection 
of the best works of this nature. It is, therefore, with 
a view to guide such patrons in their choice, that we 
shall now divide the last list into two classes ; the first 
containing such works as are chiefly valuable for refer- 
ence, but not, like those in the second, pre-eminently 
beautiful in the execution of their figures. To these we 
shall annex the current prices, where knowm, as marked 
in some of the catalogues of the London booksellers. 
1. List nf Folio IVorks on lUustraticc Ornitholo";/, of the First 
Class, miifvrm in size, and chiify valuable as Books rf Re- 
■ ference. 
Selling Catal. Publication 
Price. of Price. 
V0I3. £ s. £ s. 
Planches Enlumin^es, Buffon - -54S0- -00 
Colorifes, Teraminck - 3 (now publishing) 
Audibert and Vieillot, Oiseaux Dor^s - 2 12 12 - Bohn -00 
Vieillot’s Tropical Song Birds - - 1 10 0 - Bohn - IS 0 
American Birds - - 2 20 0 - Bohn - 33 0 
Gould’s Himalayan Birds - - 1 10 0 - Bohn - '14 0 
Total . - 16 .£100 12 
2. List of Folio IVorks on Illustratioe Omithologi/, of the Second 
Class, printed uniform in size, and eminent for ike Beauty of 
their Plates or the Value of their Descriptions. 
SellinR 
Catal. 
Publication 
Price. 
VoU. £ s. 
of 
Price. 
Le Vaillant’s Parrakeets 
Birds of Paradise 
- 2 20 0 - 
. 1-j 
Bohn 
- SI 10 
Toucans and Barbuts 
Bee^aterSj &c. 
0 
* 
CO 
Bohn 
60 0 
