8 NEW WORKS pusiisnep By LONGMANS anp CG. 
‘ Natural History and Popular Science. 
The Elements of Physics or 
Natural Philosophy. By Num Arnott, 
M.D. F.R.S. Physician Extraordinary to 
the Queen. Sixth Edition. Parr I. 8yo. 
10s. 6d. 
Heat Considered as a Mode of 
Motion. By Professor Joun TxyNDALL, 
FE.R.S. LL.D. Second Edition. Crown 8yo. 
with Woodcuts, 12s. 6d. 
Voleanos, the Character of their 
Phenomena, their Share in the Structure 
and Composition of the Surface of the Globe, 
&c. By G. Poutert Scrorr, M.P. F.R.S. 
Second Edition. 8vo. with Mlustrations, los. 
A Treatise on Electricity, in 
Theory and Practice. By A. De LA Rive, 
Prof. in the Academy of Geneva. Trans- 
lated by C. V. WAtKer, F.R.S. 3 vols. 
8vo. with Woodcuts, £3 15s. 
The Correlation of Physical 
Forces. By W. R. Grove, Q.C. V.P.R.S. 
Fourth Edition. S8vo. 7s. 6d. 
The Geological Magazine; or, 
Monthly Journal of Geology. Tdited by 
Henry Woopwarp, F.G.S. #.Z.S. British 
Museum; assisted by Professor J. Morris, 
¥.G.S. and R. Erueriper, F.R.S.E. F.G 8. 
8yo. price 1s. monthly. 
A Guide to Geology. By J. Puiities, 
M.A. Prof. of Geol. in the Univ. of Oxford. 
Fifth Edition; with Plates and Diagrams. 
Fep. 4s. 
A Glossary of Mineralogy. By 
H. W. Bristow, F.G.S. of the Geological 
Survey of Great Britain. With 486 Figures. 
Crown 8vo. 12s. 
Phillips’s Elementary Introduc- 
tion to Mineralogy, with extensive Altera- 
tions and Additions, by H. J. Brooxn, 
F.R.S. and W. Hi. Mrutur, F.G.S. Post 
Svo. with Woodeuts, 18s. 
Van Der Hoeven’s Handbook of 
Zoouocy. Translated from the Secend 
Dutch Edition by the Rev. W. CuarK, 
M.D. F.R.S. 2 vols. 8vo. with 24 Plates of 
Figures, 60s. 
The Comparative Anatomy and 
Physiology of the Vertebrate Animals. By 
Ricsarp Owen, F.R.S. D.C.L. 2 vyols. 
8vo. with upwards of 1,200 Woodeuts, 
[In the press. 
Homes without Hands: an Account 
of the Habitations constructed by various 
Animals, classed according to their Princi- 
ples of Construction. By Rey. J. G. Woon, 
M.A. F.L.S. Illustrations on Wood by G. 
Pearson, from Drawings by F. W. Keyi 
and i. A. Smith. In 20 Parts, 1s. each. 
Manual of Corals and Sea Jellies. 
By J. R. Greenn, B.A. Edited by the 
Rev. J. A. GAneraira, M.A. and the Rey. 
S. Haveutoy, M.D. Fep. with 39 Wood- 
cuts, ds. 
Manual of Sponges and Animaleuls ; 
with a General Introduction on the Princi- 
ples of Zoology. By the same Author and 
Rditors. Fep. with 16 Woodeuts, 2s. 
Manual of the Metalloids. By J. Apsoun, 
M.D. F.R.S. and the same Editors. TFep. 
with 88 Woodcuts, 7s. 6d. 
The Sea and its Living Wonders. 
By Dr. G. Hartwie. Second (Hnglish) 
Edition. 8vo. with many Illustrations, 18s. 
The Tropical World. By the same 
Author. With 8 Chromoxylographs and 
172 Woodcuts. 8yo. 21s. 
Sketches of the Natural History 
of Ceylon. By Sir J. Emerson TENNENT, 
K.C.S. LL.D. With 82 Wood Engrayings. 
Post 8vo. 12s. 6d. 
Ceylon. By the same Author. 5th Hdition; 
with Maps, &c. and 90 Wood Engravings. 
2 vols. 8yo. £2 10s. 
A Familiar History of Birds. 
By KE. Srawuey, D.D. F.R.S. Jate Lord 
Bishop of Norwich. Seventh Edition, with 
Woodcuts. Fep. 3s. 6d. 
Marvels and Mysteries of In- 
stinct ; or, Curiosities of Animal Life. By 
G. Garrarr. Third dition. Fep. 7s. 
Home Walks and Holiday Ram- 
bles. By the Rev. C. A. Jouns, B.A. P.L.8. 
Fep. with 10 Illustrations, 6s. 
