NOW READY. 



Two Volumes. Royal Quarto. With 3 Portraits and other Plates. Price, in 

 Boards, £2 10s. net. 



Vol. I : pp. i-cxx, 1-597. Vol. II : pp. i-viii, 1-718. 

 THE 



SCIENTIFIC PAPERS 



OF 



SIR WILLIAM HERSCHEL, 



KNT. GUELP., LL.D., F.R.S., 

 INCLUDING EARLY PAPERS HITHERTO UNPUBLISHED. 



Collected and Edited under the Direction of a Joint Committee of the Royal Society 

 and the Royal Astronomical Society. 



With a Biographical Introduction compiled mainly from Unpublished Material by 



J. L. E. Dreyer. 



Three Quarto Volumes of about 400 pages each, small 4to, and an Atlas of 66 pages 

 of maps in colours, 13^ X 19J, 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 INTER- 

 NATIONAL GEOLOGICAL CONGRESS, CANADA, 1913, 



with the assistance of 



GEOLOGICAL SURVEYS AND MINING GEOLOGISTS OF 

 DIFFERENT COUNTRIES. 



Edited by the 



GEOLOGICAL SURVEY OF CANADA. 



With numerous Plates and Illustrations in the Text, and 

 accompanied by an Atlas of 66 pages of maps in colours. 



The work is well illustrated with figures, maps, etc., but in addition to these text- 

 illustrations there is an atlas of 66 pages of maps in colour showing the distribution 

 of the coal areas and the geology of the more important fields. 



Sole Agents for Great Britain : 

 DULAU & CO., Ltd., 37 Soho Square, London, W. 



