34 
NATURE 
. 4, 1869 
THE DOCTRINE OF EVOLUTION. 
MR. HERBERT SPENCER’S WORKS. 
I. 
In x vol. 8vo. cloth, price 16s. Second Edition, re-organized and further 
developed, 
FIRST PRINCIPLES. 
If. 
In 2 vols. 8vo. cloth, price 345. 
THE PRINCIPLES OF BIOLOGY. 
IIT. 
In x vol. 8vo. cloth, price 6s. 
EDUCATION : Intellectual, Moral, and 
Physical. 6 
In stitf cover, price 2s. 6d. 
THE CLASSIFICATION OF THE 
SCIENCES: to which are added, Reasons for Dissenting from the Philo- 
sophy of M. Comte. 
CHEAPER EDITIONS. 
Ve 
In 1 vol. 8vo. cloth, price 1os. 
SOCIAL STATICS; or, the Conditions 
Essential to Human Happiness specified, and the First of them developed. 
VI. 
In 2 vols. 8vo. cloth, price 16s. 
ESSAYS: Scientific, Political, and Spe- 
culative. (Being the First and Second Series re-arranged, and containing an 
additional Essay.) 
*.* A few copies of the First Edition of the Second Series are still to be 
had, price ros. 
WILLIAMS & NORGATE, 14, Henrietta Street, Covent Garden, London; 
and 20, South Frederick Street, Edinburgh. | 
Just published, 8vo. price 6s. 
MACVICAR.—A SKETCH OF A PHI- 
LOSOPHY. Part I. MIND: its Powers and Capacities, and its Relation | 
to Matter. By JOHN G. MACVICAR, D.D. 
Lately published, by the same Author, Part II. of the same Work, 
MATTER AND MOLECULAR MOR- | 
PHOLOGY: the Elemental Synthesis. Illustrated by 75 Diagrams of | 
Molecules. 8vo. price 3s. 6d. 
WILLIAMS & NORGATE, 14, Henrietta Street, Covent Garden, London ; 
and 20, South Frederick Street, Edinburgh. 
Just published, royal 8vo. cloth, 4s. 
HOW TO KEEP THE CLOCK RIGHT, 
by OBSERVATIONS of the FIXED STARS, with a small fixed Tele- 
scope, together with a Table of Stars, &. By THOMAS WARNER. 
WILLIAMS & NORGATE, 14, Henrietta Street, Covent Garden, London ; 
and 20, South Frederick Street, Edinburgh. 
Just published, 7s. 6d., cloth, gs. 
SCHROEN’S LOGARITHMS. By Pro- 
fessor DE MORGAN. Seven-Ficure LoGaritums of Numbers from 
I to 108,000, and of Sines, CosiNEs, TANGENTS, COTANGENTS to every 10 
Seconds of the Quadrant, with a Table of ProporTionat Parts by Dr. 
LUDW. SCHROEN, Director of the Jena Observatory, &c. Fifth Edition, 
Corrected, and Stereotyped. With a Description of the Tables added by 
A. DE MORGAN, Professor of Mathematics, University College, London. 
1 vol. imperial 8vo. Price 7s, 6d. sewed, gs. in cloth boards. 
WILLIAMS & NORGATE, 14, Henrietta Street, Covent Garden, London; 
and 20, South Frederick Street, Edinburgh. 
FOREIGN BOOKS AT FOREIGN PRICES. 
WILLIAMS AND NORGATE’S NA- 
TURAL HISTORY CATALOGUE, a Classified List of Books on 
Natural History, Zoology, Anthropology, Physiology and Comparative Ana- 
tomy, Botany, Geology, Palzontology, Mineralogy, Chemistry, Electricity, 
Astronomy, Physics, &c. sent Post-free for one stamp. 
WILLIAMS & NORGATE, 14, Henrietta Street, Covent Garden, London; 
and 20, South Frederick Street, Edinburgh. 
TRUBNER &e CO.’S 
IMPORTANT SCIENTIFIC WORKS. 
Printed and Published at the Expense of the Government of Victoria. 
Now ready, in One Volume 4to. profusely Illustrated with Plates, Maps, and 
Woodcuts, pp. vill. and 644, cloth, 255. 
THE GOLD FIELDS AND MINERAL 
DISTRICTS OF VICTORIA, with Notes on the Modes of Occurrence of 
Gold and other Metals and Minerals. By Dr. R. BROUGH SMYTH, 
F.G.S. Assoc. Inst. C.E., Hon. Cor. Mem. of the Society of Arts and 
Sciences of Utrecht, Secretary for Mines for the Colony of Victoria, &c. 
4to. stiff covers, pp. xxv. and 100, with 12 Plates of Illustrations, 28s. 
THE SNAKES OF AUSTRALIA. An 
Illustrated and Descriptive Catalogue of all the Known Species. By 
GERARD KREFFT, F.L.S., C.M.Z.S. &c, Curator and Secretary of the 
Australian Museum, 
Will be Published in December. 
SCIENTIFIC RESULTS of aJOURNEY 
IN BRAZIL. Containing a full Account of the Geology and Physical 
Geography of the Country. By C. F. HARTT, Professor of Geology in 
Cornell University, and Professor AGASSIZ, Chief Associate in the Expe- 
dition. Together with about 100 pages descriptive of the Marine and 
Freshwater Animals and their Natural History. By Professor AGASSIZ. 
With nearly 100 Illustrations and Maps. 
In the Press. 
THE LIFTED and SUBSIDED ROCKS 
of AMERICA, with their Influence on the Oceanic, Atmospheric, and Land 
Currents, and the Distribution of Races. By GEORGE CATLIN. With 
a Map. 
8vo. pp. 113, sewed, Illustrated by 18 Plates, 22. 2s. 
A MONOGRAPH OF AUSTRALIAN 
LAND-SHELLS. By JAMES C. COX, M.D. University of Edinburgh, 
F.R.C.S. Edinburgh, Corresponding Member of the Zoological Society of 
London, Correspondent of the Academy of Natural Sciences of Fhila- 
delphia, Member of Royal Medical Society of Edinburgh, Royal and 
Entomological Societies of New South Wales. 
GEOLOGY AND MINERALOGY. 
A SYSTEM OF MINERALOGY. De- 
scriptive Mineralogy, comprising the most Recent Discoveries. By JAMES 
DWIGHT DANA, aided by GEORGE JARVIS BRUSH. _ Fifth Edi- 
tion, Rewritten and Enlarged, and Illustrated with upwards of Six Hundred 
Woodcuts. In one large 8vo. volume, pp. 900, and numerous Woodcuts. 
Price 1é. 165. 
A JOURNEY IN BRAZIL. By Professor 
and Mrs. LOUIS AGASSIZ. With Illustrations. 8yo. pp. xx. and 540, 
cloth. ars. 
GEOLOGICAL SKETCHES. By Pro- 
fessor AGASSIZ. With Portrait and numerous Illustrations. One Vol. 
crown 8yo. pp. iv. and 311. 10s. 6d. 
AN ESSAY ON CLASSIFICATION. By 
Professor AGASSIZ. 8vo. pp. vili. and 381, cloth. 
MANUAL OF GEOLOGY. Treating of 
the Principles of the Science, with special reference to American Geological 
History. For the use of Colleges, Academies, and Schools of Science. By 
JAMES D. DANA, M.A., LL.D. Illustrated by a Chart of the World, 
and over One Thousand Figures, mostly from American Sources. 8vo. 
pp- 798, cloth, rs. 
A TEXT-BOOK of GEOLOGY. Designed 
for Schools and Academies. By J. D. DANA, LL.D. Illustrated by 375 
Woodcuts. Crown 8vo. pp. vi. and 354, cloth. 7s. 6d. 
MANUAL of MINERALOGY ; Including 
Observations on Mines, Rocks, Reduction of Ores, and the Applications of 
the Science to the Arts. Designed for the use of Schools and Colleges. New 
Edition, revised and enlarged. With 260 Illustrations. 12mo. pp. xil. and 
456, cloth. 7s. 6d. 
THE FAILURE OF GEOLOGICAL 
TTEMPTS MADE BY THE GREEKS FROM THE EARLIEST 
S DOWN TO THE EPOCH OF ALEXANDER. By JULIUS 
Quarto, pp. xx. and 
12S. 
AG 
SCHVARCZ, F.G.S. Revisedand Enlarged Edition. 
154, cloth. os. 6a. 
THE GEOLOGICAL MAGAZINE;; or, 
MONTHLY JOURNAL OF GEOLOGY, with which is incorporated 
“The Geologist.” Edited by HENRY WOODWARD, F.G.S., F-Z.S. of 
the British Museum. Assisted by Professor JOHN MORRIS, F.G.S &e. 
&c. of University College, and ROBERT ETHERIDGE, F.R.S.E., 
F.G,S. &e. of the Museum of Practical Geology. 
London: TRUBNER & CO, 60, Paternoster Row. 
