SCIENCE. -ADVER TISEMENTS. 



Important Scientific Books Recently Published 



ABBOT, Brig.-Gen. Henry L. Late Consulting Engineer of the New Panama Canal Co. 



Problems of tlie Panama Canal. Cloth, 12mo, fl.50 net (postage 12c.). 



ALLBUTT, T. Clifford, UnimrsiUj of Cambridge. 



System of Medicine and Ciiynaecology. Complete in nine volumes. 



New and cheaper edition, |25.00, net, per .set. 



BOTTOME, S. R. 



Radium, and All About it. % p. 12mo, il., paper 35 cts., net. 



BOl'lVTOiV, William Pingry, Universilg of Oregon. 



Applications of the Kinetic Theory of Gases, Vapors, Pure 

 Liquids, and tlie Theory of Solutions. 10-f 288 pp. 8vo, cl., ll.GOreei. 



DEXTER, Edwin Grant. Universiiy of Illinois. 



Weather Influences. An Empirical Study of the Mental and Physiological 

 Effects of Definite Meteorological Conditions. With Introduction by Cleveland Abbe, 

 LL.D. 1-1-286 pp. 8vo, cl., $2.00 net. 



GIRBOIVS, Edward E., Universilg of Maryland, Baltimore. 



I'he Eye: its Refraction and Diseases. The Refraction and Func- 

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

 Explanatory Cuts and Diagrams. 



9 -|- 472 pp. 4to, il., cl., $5.00 net, half morocco, $6.50 net. 



GOOCH, Frank Austin, Yale University, and WALKER, ( laude Frederick. 



Outlines of Inorganic Chemistry. Cloth, 514 pp., .11.75 nc< (postage 18c.). 



JMETCALF, Maynard ITI., M^omans College of Baltimore. 



Au Outline of the Theory of Organic Evolution. With a Descrip- 

 tion of Some of the Phenomena which It Explains. 17-(-204pp. 8vo, il.,cl., $2.50 ne^. 



IVICHOLS, Edward L., and William S. FRAXKLIiV, Cornell University. 



The Elements of Physic. A College Text-Book. In Three Volumes. Vol- 

 ume I. — Mechanics and Heat. Third edition, rewritten with additions. 



10+2'JO pp. 8vo, cl., $1.90 net. 



RlGlll, Augusto, University of Bologna. Authorized Translation by AuoDSTUS TROwnciDnE, 

 University of Wisconsin. Modern Theory of Physical Phenomena. 



Radio-Activity, Ions, Electrons. 13-1-165 pp. 12mo, cl., $1.10 net. 



RUTHERFORD, E., McGill University, Montreal. 



Radio-ActiTity. 8-|-399 pp. 8vo, il., cl., $3.50 wf<. 



SHEARER, John S., Cornell University. 



Notes and Questions in Pliysics. New edition. 



7+284 pp. 8vo, il., cl., $1.60 net. 



SWEIVSOIV, Rernard Victor, and FRAXKEjVFIELD, Budd. 



Testing of Electro-Magnetic Machinery and otiier Apparatus. 



Vol. I.— Direct Current. 23 + 420 pp. 8vo, il., cl, $3.00 net. 



WEYSSE, Arthur Wisswald, Massachusetts Institute of Technology. 



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



25+525 pp. 8vo, cl., il., $4.00 ncif. 



WI1ITTAKER,E. T., 7Vm% College, Cambridge. 



A Treatise on the Analytical Dynamics of Particles and Rig- 

 id Bodies. With an Introduction to the Problem of Three Bodies. 



18 + 414 pp. Imperial 8vo, cl., $4.00?;<>i!. 



WIEl^lS, .1. C, Royiil Botanic Gardens, Ceylon. 



A Manual and Dictionary of the Flowering Plants and Ferns. 



Second edilion, revised and rearranged, in one volume. 



Cambridge Biological Series. 21+67 pp. 12mo, il., cl., $2.75 net. 



Postage on net booles ordered of the publishers i« uniformly an extra charge. 



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



