SCIENCE.-ADVERTISEMENTS. iii 



Important = Scientific = Books - Recently = Published 



BAKIVETT, S. J., Leland Stanford Jr. University. 



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



CAMPBELL, Douglas Honghton, of Leland Stanford Jr. University. 

 A UniTersity Text-Book of Botany. 



With many Illustrations. 15+579 pp., cloth, $4.00 net. 



DEXTER, Edwin Orant, Ph. D., University of Illinois. 



Weather Influences, An Empirical Study of the Mental and Physiological 

 Effects of Definite Meteorological Conditions. Cloth, 8vo, |2.00 net. 



GEIKIE, Sir Archibald. 



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

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



61BBOIVS. Edward W^., Universiti/ of Maryland, BnUimore. 



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. 



HIORIVS, Arthur H., Birmingham Municipal Technical School. 



Steel and Iron. For advanced students. 16+514 pp. 12mo, illus., cloth, %2.b0net. 



JACH.SOIV, D. C. and J. P. 



An Elementary Book on Electricity and Magnetism and 

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



JOIVES, Harry C, Johns Hopkins University. 



Elements of Inorganic Chemistry. 



13+343 pp. 12mo, illus., cloth, $l.f!6 net. 



HOCHER, 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 COJVTE, 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. 8vo, 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, $8.50 wei 



SEDGWICK, 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 FRANKEIVFIELD, 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. Eastman, 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., Svo, cloth, $4.00 net. 



Postage on net books ordered of the publishers is uniformly an extra charge. 



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



