

WORKS OF DR. HEINRICH RIES 



isy liKiNKnn Bnts, Ph.D. 

 Professor of Economic Geology In Cornell University. 

 ECONOMIC GEOLOGY. Fourth Edition, Thoroughly Revised and Enlarged. 

 xviii + 856 pages, (i by '•», 391 figures, 75 plates. Cloth, $4.00 net. 

 In this now edition, which was necessitated by the continued advance In knowledge 

 of economic geology, a description of the more Important Canadian mineral depi II 

 has been included, as well as brief references to some of the well-known ones of other 

 countries. Also the latest available statistics have been Included, taken principally 

 from the United States Geological Survey and Canadian Department of Mines reports. 

 The chapters on Ore Deposits have been enlarged to Include modern practice and 

 recent discoveries. i 



CLAYS. Their Occurrence, Properties, and Uses, with Special Reference to 

 Those of the United States. Second Edition, xix + 554 pages. 6 by 9, 65 

 figures, 44 plates. Cloth, $5.00 net. 



A comprehensive work on clay and Its applications, of value to geologists, chemists, 

 and others interested in this subject, treated mainly from the American standpoint. 

 The subject-matter of the state descriptions ha$ been arranged by geologic formations 

 as permitting the greatest uniformity of treatment. 



BUILDING STONES AND CLAY PRODUCTS, a Handbook for 

 Architects, xv + 415 pages. 6 by 9, 20 figures, 59 plates. Cloth, $3. 00 net. 

 This book presents simply the fundamentally Important facts regarding the Prop- 

 erties and Durability of Building Stones and (May Products. A list of structures In 

 which the more important Building Stones have been placed is given. The book also 

 contains a glossary of terms. 



B\' Rik.~ A i.r.n.irroN. 



HISTORY OF THE CLAY -WORKING INDUSTRY IN THE 



UNITED STATES. By Heinrich Ries, Ph.D., and Henry Leighton, 



A.B., Assistant Economic Geologist. New York Geological Survey. 



viii + 270 pages. 6 by 9, Illustrated. Cloth, $2.50 net. 



Written from data collected for the Department of Economics and Sociology of the 



Carnegie Institution of Washington. All available magazines, private publications, and 



government and state reports have been consulted by the authors in the preparation of 



this work. The main treatment of the subject-matter is arranged by products followed 



by a discussion by states. The statistics in nearly all cases are taken from the United 



States Geological Survey report on Mineral Resources. 



By Ries & Watson. 

 ENGINEERING GEOLOGY. By Heinrich Ries, Ph.D., and Thomas L. 



Watson, Ph.D., Professor of Economic Geology in the University of 



Virginia, and State Geologist of Virginia. Second Edition, Enlarged. 



xxvii +■ 722 pages. 6 by 9, 249 figures iu the text, and 104 plates, comjsris- 



ing 175 figures. Cloth, $4.00 net. 

 Intended primarily for civil engineers, giving a special course In geology as applied 

 to engineering. Emphasizes throughout the practical application of the topics treated 

 to engineering work. In the second edition a chapter on Historical Geology has been 

 added in response to numerous requests. The list of references has also been brought 

 up to date and some additional foreign titles included. 



FREE EXAMINATION— Np CASH IN ADVANCE. 



These books will be sent free for examination, no cash in advance, to mem- 

 bers of national technical societies. If you are not a member of any society 

 you can supply a reference, or state your position. At the end of 10 days you 

 are to remit the price of the books, or return them, postpaid. 



JOHN WILEY & SONS, Inc. 



Dept. B— 432 Fourth Avenue, New York 

 London : Chapman & Hall, Ltd. 



Montreal, Can. : 

 Renouf Publishing Co. 



Manila, P. I..; 

 Philippine Education Co. 

 A.1S.-2-16 



