NEW WILEY BOOKS 



for Geologists 



Just Published! 



COAL 



Its Properties, Analysis, Classification, Geology, Extraction, Uses 



and Distribution 

 By Elwood s. Moore 



Dean of the School of Mines, Pennsylvania State College. 



This book gives, in compact form, the salient facts and theories relating to 

 coal — for the scientist, the practical man and the layman. Many valuable maps 

 are included, showing the distribution of various types of coal in practically 

 every country of the world. 



462 pages. 6 by 9. 142 figures. Cloth, $5.00. 



Ready June 10th. 



HANDBOOK OF THE PETROLEUM INDUSTRY. 



By David T. Day, Ph.D., Editor-in-Chief, and a Staff of 16 Foremost 

 Petroleum Experts. 



A monumental work — the only book covering every phase of Petroleum. 

 Of especial interest to the geologist whose work takes him into oil-bearing lands 

 are the descriptions of every oil field known in the world, including all the 

 rocks with which oil has ever been associated, how to recognize them, and 

 where they occur. 



Oil shales are also thoroughly treated. 



In 2 volumes — 1990 pages-profusely illustrated. Cloth, $15.00. 



We are always glad to send any Wiley Book on Free Examination, subject to 

 return if not satisfactory. Our General Catalog is also at your disposal. 



JOHN WILEY & SONS, Inc. 



432 Fourth Avenue, New York 



AJS 5.22 



