

WILEY MINEKAIOGICAI BOOKS 



By JOSEPH P. IDDINGS 



ROCK MINERALS. 



Their Chemical and Physical Characters and their Determination in Thiu 

 Sections. Second Edition, Revised and Enlarged. 



xiii + 617 pages. 6 hy 9. 500 figures and 1 colored plate. 

 Cloth, $5.00 net. 

 IGNEOUS ROCKS. 



In Two Volumes. Volume I, Composition, Texture and Classification. 

 Volume II, Description and Occurrence. 



Volume I. xi+464 pages. 6 by 9. 130 figures and 2 colored plates. 

 Cloth, $5.00 net. 



Volume II. xi+685 pages. 6 by 9. 20 figures, 8 maps (6 colored) and 

 over 2000 chemical analyses of rocks. Cloth, $6.00 net. 



By G. MONTAGUE BUTLER, E.M. 



A POCKET HANDBOOK OF MINERALS. 



Designed for Use in the Field or Class-room, with Little Reference to Chem- 

 ical Tests. Second Edition. 



ix+311 pages. 4 by 6J. 89 figures. Flexible binding, $2.50 net. 



POCKET HANDBOOK OF BLOWPIPE ANALYSIS. 



Designed for the Use of Students and Prospectors with the Idea of making 

 Oral Instruction Unnecessary. First Edition, Corrected. 



v-t-80 pages. 4£ by 6|. Cloth, 75 cents net. 



A MANUAL OF GEOMETRICAL CRYSTALLOGRAPHY. 



Treating Solely of those Functions of the Subject Useful in the Identi- 

 fication of Minerals. (In press. Ready April, 1918.) 



viii+152 pages. 4£ by 6f. 107 figures. Cloth. 



FREE EXAMINATION— NO 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. : Manila, P. I. : 



Kenouf Publishing Co. Philippine Education Co. 



