SCIENCE.-ADVERTISEMENTS. iii 



Important = Scientific = Books = Recently = Published 



BAR\ETT, S. J., Leland Stanford Jr. University. 



Elements of Electro-maguetic Theory. 480 pp., cloth, $3.00 net. 



CAMPBELL, Douglas Hoilgllton, of Leland Stanford Jr. Uniuersity. 

 A University Text- Book of Botany. 



With many Illustrations. 15-(-579 pp., cloth, |4.00ne<. 



DEXTER, Edwin Grant, Ph.D., Univer.vty of Illinois. 



Weather Iiitluence«). An Einpirical Study of the Mental and Physiological 

 Effecis of Definite Mettorological Conditions. Cloth, 8vo, $2.00 net. 



GEIKIE, Sir Archibald. 



Text-booR of <weology. Fourth edition, revised and enlarged. In 2 volumes. 

 Vol. I, 17+702 pp.; Vol. II, 9+720 pp. Svo, illustrated, cloth, $10.00 net. 



GIBBOIVS, Edward E., Umvrsity of Maryland, Baltimore. 



The Eye : its Refraction and Diseases. The Refraction and Func- 

 tional Testing of the Eye, Complete in Itself, in Twenty-eight Chapters with Numerous 

 Cuts and Diagrams. 9+ 472 pp. 4to, il., cl., $5.00 net, half morocco, $6.50 net. 



mORIVS, Arthur H., Birmingham Municipal Technical School. 



Steel and Iron. For advanced students. 16+514 pp. 12mo, illus., cloth, $2.50 wei. 



JACRSOIV, D. C. and J. P. 



An Elementary Book on Electricity and Itlagnetism and 

 their Applications. 11+482 pp. Illustrated. 12mo, half leather, $1.40 wet 



JONES, Harry C, Johns Ilopkins University. 



Elements of Inorganic Chemistry. 



13+343 pp. 12mo, illus., cloth, $1.,'^6 net. 



KOCHER, Dr. Theodor, University of Bern. 



Operative Surgery. Authorized translation from the Fourth German Edition 

 (much enlarged) by Harald J. Stiles. 255 Illustrations. Cloth, 8vo, $5.00 net. 



LE COWTE, Joseph IV., University of California. 



An Elementary Treatise on the Mechanics of Machinery. 



With 15 plates. 10+311 pp. 12mo, cloth, $2.25 net. 



MORGAN, Thomas Hunt, Bryn Mawr College. 



Evolution and Adaptation. 14 + 470 pp. Svo, cloth, $3.00 net. 



OSTWALD, Wilhelm. 



The Principles of Inorganic Chemistry. 



With 122 Figures in the Text. 27+785 pp. 8vo, cloth, $6.00 net. 



RUTHERFORD, E., McGill University. 



Radio- Activity. 400 pp. 8vo, illustrated, $3.50 nc< 



SEDGWICR, William T., Massachusetts Inst, of Technology. 



Principles of Sanitary Science and the Public Health. 



19+368 pp. 8vo, cloth, $3.00 net. 



SNYDER, Harry, University of Minnesota. 



The Chemistry of Plant and Animal Life. 



17 + 406 pp. 12mo, cloth, $1.40 net. 



SWENSON, Bernard Tictor, and FRANKENFIELD, Budd. 



Testing of Electro-Magnetic Machinery and other Apparatus. 



Vol. I. 23+420 pp., illus., Svo, cloth, $3.00 net. 



TON ZITTEL, Carl A., University of Munich. 



Text- Book of Palaeontology. Vol. II. Translated and Edited by Charles 

 R. Eastma.n, Harvard College Museum. 8+283 pp. 8vo, cloth, $3.00 net. 



WEYSSE, Arthur Wisswald, Massachusetts Institute of Technology. 



A Synoptic Text-book of Zoology. For Colleges and Schools. 



25+525 pp., illus. ,8vo, cloth, $4.00 7iet. 



Postage on net books ordered of l/ie publishers is uniformly an extra charge. 



By The Macmillan Company, 66 Fifth Ave., New York 



