SCIENCE-ADVERTISEMENTS 



Fuel 



Solid, Liquid, and Gaseous 



By J. S. S. BEAME, F.C.S., Instructor in Chemistry, Royal Naval College, Greenwich, Lecturer on 



Fuel, Sir John Cass Technical Institute, Aldgate. With 73 Figures and 55 Tables. 



8vo. Pp. xvi+372. |3.50net. (Weight, 34 oz. ) 



Endeavor has been made in this book to place before the technical man, vpho is not a fuel 



specialist, but who requires a good general knowledge of the subject, as full information on all fuels 



of importance as space permits : at the same time the scientific principles underlying gas producer 



practice, combustion, etc., have not been neglected. The application of fuels to other purposes has 



not been overlooked, but primarily fuels are considered in their relation to power- As far as possible 



the diagrams have been chosen to illustrate principles and typical forms of plant and apparatus. 



Geological and Topographical Maps 



Their Interpretation and Use : A Handbook for the Geologist and Civil Engineer 



By AETHUE P. DWEREYHODSE, D.So., F.G.S., Lecturer in Geology in the Queen's University of 

 Belfast. With 90 Figures and 2 Tables. 8vo. Pp. viii+133. $1.25 net. ( Weight, 18 oz. ) 

 A text-book dealing with the practical problems which are involved in the interpretation of maps, 

 descriptions and instructions that will enable the oivil engineer and the student of geology to draw 

 sections of the country depicted upon maps, and to ascertain the depths and thickness of the various 

 strata ol which it is built up, and their relations to the surface of the ground and to each other. 



A brief summary of the main structural features of rocks is included, for the benefit of those un- 

 able to obtain a systematic course of instruction in geology. 



Longmans, Green, & Co. V^^R/ 4tli Ave. & 30th St., N. Y. 



THIRD EDITION, REWRITTEN AND ENLARGED 

 WITH COLORED PLATES 

 WHIPPLE— the nicroscopy of Drinking Water. 



By George Chandler Whipple, Gordon McKay Professor of Sanitary Engineering, Harvard 

 University and the Massachusetts Institute of Technology. With a chapter on The Use of the 

 Microscope. By John W. M. Bunebe, Ph.D. xxi+409 pages, 6x9, 74 figures, 6 full-page 

 plates in the text, and 19 plates of organisms in colors. Cloth, $4,00 net. 



SECOND EDITION, REVISED AND ENLARGED 



HAZEN— Clean Water and How to Get It. 



By Allen Hazkn, Member of the American Society of Civil Engineers, etc. xii+196 pages, 

 5^x8, containing 18 full-page half-tone illustrations. Cloth, $1.50. 



CARMICHAEL—Tite Theory of Numbers. 



Being No. 13 of the Mathematical Monograph Series. By Eobeet D. Caemichael, Asso- 

 ciate Professor of Mathematics in Indiana University. 6x9, Cloth, $1.00 net. 



I>jrCJK'SOJV— Elementary Theory of Equations. 



By Leonaed Eugene Dickson, Ph.D., Professor of Mathematics in the University of 

 Chicago, v+184 pages, 6 x 9, 26 figures. Cloth, $1.75 net. 



JOHN V/ILrEV & SONS, Ine., 



432 Fourth Avenue, New York City 



London : Montreal, Can.: 



CHAPMAN & HALL, Limited RENOUF PUBLISHING CO. 



