Ready for YOU, April 15th 



RIES & WATSON'S 



Elements of Engineering Geology 



By H. Ries, Ph.D., Professor of Economic Geology in Cornell University, 



and Thomas L. Watson, Ph.D., Professor of Economic 



Geology in the University of Virginia. 



An ideal text-book for a somewhat briefer than usual coarse in Engineering 

 Geology, emphasizing the practical application of the subjects treated to 

 engineering work. 



This volume is more than a condensation and simplification of the authors' 

 larger book, " Engineering Geology," in fact, it has involved a complete re- 

 writing of many parts of that book and the amplification of others. 



362 pages, 5^ by 8^, 252 figures. (In Press, Ready May 15.) 



Also by H. Ries and others 



ExGiNEERixG Geology. Second Edition. 

 By H. Ries, Ph.D., and Thomas L. Watson, Ph.D. 



722 pages, 6 by 9—249 figures, 104 plates. Cloth, $5.00 postpaid. 



Economic Geology. Fourth Edition, Revised Sc Enlarged. 

 By H. Ries, Ph.D. 



856 pages, 6 by 9—291 figures, 75 plates— $5.00 postpaid. 



Clays. Their Occurrence, Properties and Uses. 

 By H. Ries, Ph.D. 



554 pages 6 by 9-112 figures, 44 plates — $5.00 postpaid. 



History of the Clay-Working Industry of the United States. 

 By H. Ries, Ph.D., and Henry Leighton, A. B. 



217 pages, 6 by 9— illustrated— $2.50 postpaid. 



Let us send you any Wiley Books for Free Examination. 



JOHN WILEY & SONS. Inc. 



432 Foutth AventiC, New York 



London : Chapman & Hall, Ltd. 



Canada: 



Renouf Publishing Co. 



