LIST OF BOOKS OFFERED FOR SALE 
AT THE NET PRICES AFFIXED BY 
DULAU & CO., LTD, 37 SOHO SQUARE, LONDON, W. 
Three Quarto Volumes of about 400 pages each, small 4to, and an Atlas of 66 pages of maps 
in colours, 133193, bound in heavy paper cover. Price £5 5s. per set net. 
THE COAL RESOURCES OF THE WORLD. 
An Inquiry made upon the initiative of 
THE EXECUTIVE COMMITTEE OF THE TWELFTH INTERNATIONAL 
: GEOLOGICAL CONGRESS, CANADA, 1913 
with the assistance of 
GEOLOGICAL SURVEYS AND NTIS GEOLOGISTS OF DIFFERENT 
HDITED BY THE 
GEOLOGICAL SURVEY OF CANADA. 
“The preparation of the monograph involved a large amount of special investigation in several of the 
countries from which reports were submitted, and the three yolumes with the atlas of beautifully executed 
maps will serve as a fitting companion volume to The Tron Resources of the World.’'—Nature. 
BATHER (F. A.). Studies in Aldbiedsteroiden: LIX. Reprinted, with 
additicns, from the Geological Magazine, 1898-1915. London, 1915. 
8vo. 136 pages and 13 plates. 10s. 
BONHOTE (J. L.). Vigour and Heredity. London, 1915. Svo. With 
coloured and uncoloured plates and diagrams in text. Cloth. 10s. 6d. 
CHILD (C. M.). Senescence and Rejuvenescence. Chicago [1915]. 8vo. 
pp. 480. Illustrated. Cloth. 16s. ¢ 
CRAIG (E.H.C.). Oil Finding: an Introduction to the Geological Study 
of Petroleum. 2nded. London, 1914. 8vo. pp. 208. Cloth. 8s. 6d. 
CRAMPTON (C. B.) AnD CARRUTHERS (R. G.). The Geology of Caithness. 
Edinburgh (Geol. Surv.), 1914. S8vo. Illustrated. 4s- 
DANA. Third Appendix to the Sixth Edition of Dana’s System of 
- Mineralogy, by William EH. Ford. Completing the Work to 1915. New 
York, 1915. 8vo. pp. xiii+ 87. Cloth. 6s. 6d. 
ECKEL (E. C.). Iron Ores: their occurrence, valuation, and control. New 
York, 1914. Svo. Illustrated. Cloth. 17s. 
FINLAY (G. I.). Introduction to the Study of Igneous Rocks. London, 1913. 
Crown 8yo. pp. 228, with 3 coloured plates and numerous illustrations. 
Flexible leather. 8s. 6d. : 
GREGORY (J. W.). Geology of To-day. A popular introduction in simple 
language. London,1915. 8yvo. pp. 328, with 24 plates and illustrations. 
Cloth. 5s. 
HAGER (D.). Practical Oil Geology. New York, 1915. Crown Svo. pp.150. 
Illustrated. Cloth. 8s. 6d. 
HUTCHINSON (H. G.). Life of Sir John Lubbock (Lord Avebury). London, 
1914. 2vols. 8vo. pp. 352, 344. £1 10s. 
IDDINGS (J.). The Problems of Volcanism. (Silliman Memorial Lectures.) 
New Haven, 1914. Roy. 8vo. With 86 illustrations and chart. Cloth. 
eon alise 
JOHANSSEN (A.). Manual of Petrographic Methods. New York, 1914. 8vo. 
Illustrated. Cloth. £1 5s. 
JOLY (J.). The Birth-time of the World, and other scientific essays. London, 
1915. 8vo. With 28 plates and 15 illustrations in text. Cloth. 10s. 6d. 
KEITH (A.). The Antiquity of Man. london, 1915. Syo. With 189 
illustrations. Cloth. 10s. 6d. 
LAKE (P.). Physical Geography. Cambridge, 1915. Svo. With 20 plates. 
Cloth. Ts. 6d. 
LANKESTER (Sir Ray). Diversions of a Naturalist. London, 1915. 8vo. 
With coloured front and 43 other illustrations. Cloth. 6s. 
LECONT (J.). Elements of Geology. 5th ed., revised and enlarged. With 
new plates and illustrations. New York, 1915. S8yvo. Cloth. 18s. 
