20 
AVES. 
trata et coll^ctiva^ (pp. 10-13), ^ Monographiae. — Familise. — 
Genera. — Species (pp. 13-81), ' Pterylographia ^ (pp. 81-85), 
^Anatomia. Physiologia^ (pp. 85-105), ^ Embry ologia^ (pp.l05- 
108), ^Oologia. Nidologia^ (pp. 108-116), ^Propagation (pp.ll6-' 
122), ^lE>ioiogian (pp. 122-145), ^Migration (pp. 146-155), 
^ Distributio geographica,’ 'with various subdivisions (pp. 155- 
212), ‘Aves monstrosse, abnormes, hybridae/ (pp. 212-217), 
^ Palsebmithologian (pp. 217-223), 'Aves domesticaeet captivaen 
(pp. 223-238), ^ Ornithologia agraria et venatoria.n (pp. 238- 
243), ^ Ornithologia vulgaris ^ (pp. 243-247), ‘ Collectiones ^ 
(pp. 248-250), ^Taxidermia^ (pp. 250-252)^ The second part, 
^ Nomenclator Ornithologicus,^ proceeds as far as the letter C, 
and serves sufficiently as a specimen of v\^hat the whole work 
will be like. So many and just criticisms have been passed 
upon this much talked-of book’ that it is not proposed here to 
do more than to confirm the opinions of reviewers to the full 
extent. To suppose that a work like the present could be 
devoid of all utility would be unfair ; but the arrangement of the 
subjects under the various headings are so arbitrary, confusing, 
and erroneous, that it will always be difficult to obtain from it 
any information required, and when obtained it cannot be 
trusted. As regards the second part of the work, ornithologists 
will decline to recognize in the author an authority who is to 
act as censor of the science, in the face of the evident proofs of 
incompetency flagrant on every page. Had he but been con- 
tent to take Gray^s ^ Hand-list,^ and supply the references there 
unfortunately wanting, giving his own opinions freely but 
separately. Prof, (iiebel would have earned the lasting gratitude, 
of ornithologists. For such a task, however, he is manifestly 
unfit. rXCf* J. f. O. 1872, pp. 225-230 j Literarisches Central- 
blatt, 1872, pp. 215-217, 318; Z. ges. Naturw. Feb. 1872; 
Ibis, 1872, pp. 191-193; Am. Nat. vi. pp. 549-551.] 
THE GENERAL SUBJECT. 
/BiiEHM, A. E. Bird-Life. Translated from the German by 
11. M. Laboucheke and W. Jesse. London: 1872. 8vo, 
parts iv.-vi. 
[K continuation of the work before noticed (Zool. Rec. viii. 
p. 25).y 
^OPE, E. 1). Synopsis of the extinct Batrachia, Reptilia, and 
Aves of North America. Tr. Am. Phil. Soc. xiv. pp. 1-250, 
pis, i.-xiv. [l^hasianid(B,Pelecanid(S,'\ J 
^Hutton, F, W. On the Flight of Birds. Ibis, 1872, pp. 139- 
143. 
( The author, returning to the subject he has before discussed 
(Zool. Rec. vi. p. 28), agrees in all but one point with M. Marey 
