U \YTui 4. - "D~~~ " 



Without a Peer 



DANA-FORD 

 TEXT - BOOK OF 



MINERALOGY 



BY EDWARD SALISBURY DANA 



Third Edition, Revised 



BY WILLIAM E. FORD 



A PROMINENT Mineralogist refers to this new edition as "a worthy 

 successor of the book that has so long stood without a peer among text. 

 books of mineralogy." 



An extended treatise on Crystallography and Physical Mineralogy is included. 

 720 pages. 6 by 9. Profusely illustrated. Cloth, $5.00. 



USEFUL MINERALS AND RARE ORES 



By Alexander McLeod 



A BOOK of "Practical Instructions in the Search for, and the Determina- 

 tion of, the Useful Minerals, including the "Bare Ores," to quote from 

 the complete title of this popular work. The Second Edition has been very 

 well received. 



254 pages. 4 by 6£. Flexible binding, $2.50. 



Ready late in May! 



A HAND-BOOK OF THE PETROLEUM INDUSTRY 



By David T. Day, Ph.D., Editor-in-Chief, in Collaboration with 

 Twenty Contributors and Associate Editors. 



A complete, authoritative treatise. 



JOHN WILEY & SONS, Inc. 



432 Fourth Avenue, New York 



AJS 3.22 



