OCTOBEE 10, 1902.] 



SCIENCE. 



589 



Flemming Carrow, M.D., University of Mich- 

 igan, Ann Arbor, Mich. 



Ira J. Dunn, M.D., Physician, 810 Peach St., 

 Erie, Pa. 



Ernst Fahrig, Chief of Laboratories, Philadel- 

 phia Commercial Museums, Philadelphia, Pa. 



Geo. H. Gibson, 268 Shady Ave., E. E., Pitts- 

 burgh, Pa. 



Ozni P. Hood, Professor of Mechanical and 

 Electrical Engineering, School of Mines, Hough- 

 ton, Mich. 



G. Wilbur Hubley, Electric Light Co., Louis- 

 ville, Ky. 



Herman C. Jungblut, M.D., Physician, Tripoli, 

 Iowa. 



Orran W. Kennedy, General Superintendent, 

 Prick Coke Co., Uniontown, Pa. 



Palmer J. Kress, M.D., Physician, 636 Hamilton 

 St., Allentown, Pa. 



Benjamin Lee, M.D., Secretary State Board of 

 Health, 1420 Chestnut St., Philadelphia, Pa. 



Daniel Lichty, M.D., Physician, Masonic Tem- 

 ple, Rockford, 111. 



Ernest H. Lindley, Professor of Psychology, 

 University of Indiana, Bloomington, Ind. 



Robert E. Lyons, Professor of Chemistry, Uni- 

 versity of Indiana, Bloomington, Ind. 



George C. Martin, Assistant Geologist, Mary- 

 land Geological Survey, Johns Hopkins Univer- 

 sity, Baltimore, Md. 



Henry F. Naphen, Member of Congress, 311 

 Pemberton Building, Boston, Mass. 



Wm. R. Roney, Mechanical Engineer, 10 Bridge 

 St., New York City. 



Saml. P. Sadtler, Consulting Chemist, N. E. 

 corner Tenth and Chestnut Sts., Philadelphia, Pa. 



George S. Seymour, 11 Broadway, New York 

 City. 



Lee H. Smith, M.D., Physician, Mus. Soc. Nat. 

 Sciences, Buffalo, N. Y. 



Fred D. Snyder, M.D., Physican, 10 Center St., 

 Ashtabula, Ohio. 



Robert W. Stewart, M.D., Physician, The Ortiz, 

 Cincinnati, Ohio. 



Lucius S. Storrs, Geologist, N. P. Ry. Co., St. 

 Paul, Minn. 



Henry L. Ward, Secretary Board Trustees, 

 Public Museum, Milwaukee, Wis. 



Homer D. Williamson, 133 W. 10th Ave., 

 Columbus, Ohio. 



Chas. E. A. Winslow, Instructor of Biologyi 

 Mass. Inst. Tech., Boston, Mass. 



Walter Wyman, M.D., Surgeon-General, Public 

 Health and Marine Hospital Service, Washington, 

 D. C. 



SCIENTIFIC BOOKS. 

 The Elements of Physical Chemistry. By 



Haery C. Jones. New York, The Macmil- 



lan Company, 1902. 14 x 21. Pp. x -f 565. 



Bound, $4. 



In this, the most pretentious book on phys- 

 ical chemistry which has appeared in English, 

 the author has not departed from the orthodox 

 German school in arrangement of the subject 

 matter; in the treatment, however, many pas- 

 sages show a style which is peculiarly his own. 

 A brief review will show what he believes 

 should be taught in a university course in 

 physical chemistry. 



The reader is introduced to the atom and the 

 molecule — the fundamental ideas of the chem- 

 ist; the laws of combination, determination 

 of atomic weights and then the periodic law 

 are given in detail. In separate chapters are 

 then discussed the various laws, theories and 

 disconnected facts bearing on the physical 

 properties of pure gases, liquids and solids. 

 There is here given much of the work which, 

 prior to 1885, had engaged the attention of 

 chemical philosophers — the discovery of rela- 

 tions between physical properties and constitu- 

 tion. These chapters will afPord interesting 

 reading to many who wonder why the chemist 

 requires all the physics he can obtain. There 

 is little in these chapters, however, illustrative 

 of the use of these properties in analysis. 



In the fifth section the subject of solutions 

 is considered. This chapter deals with 

 the classical work of PfefFer on osmotic pres- 

 sure, of van't Hoff on the analogy between os- 

 motic and gas pressures, of Raoult on the vapor 

 pressures, the origin of the theory of electro- 

 lytic dissociation and the arguments in its 

 favor, and a discussion of properties of dilute 

 solutions. 



The thirty pages which are devoted to ther- 

 mochemistry indicate the development of the 

 subject and give methods and results. Electro- 

 chemistry requires and merits four times this 

 space for its treatment, since the remarkable 



