Modern Chemistry Books The Essentials of Modern Chemistry By CHARLES E. DULL, South Side High School, Distinctive characteristics of this textbook for high schools are the following: Successful adaptation of the science to the interests and abilities of secondary-school students. Large proportion of space to practical applications of chemistry to daily life. Such skillful treatment of the practical topics as to lead students to acquire a sound knowledge of the fundamental principles of the science. Questions on each chapter which stimulate the studenfs to apply the facts learned to the various activities of common experience. HERBERT R. SMITH, Lake View High School, Chicago: Its best point is the new and practical material brought in. Chapter XV on Equations is the best treatment I have seen in any text. BERTHA M. CLARK, William Penn High School for Girls, Philadelphia: I shall place it on the requisition list as soon as opportunity offers. The references made to chemistry in modern industry and warfare are especially commendable. The Laboratory Study of Chemistry By HERBERT R. SMITH and HARRY R. MESS of the Chicago High Schools, 296 pp. Square 8vo. $1.20. The laboratory method gives pupils a new viewpoint of chemistry. They have the important facts and purposes involved in the experiment presented clearly and simply. They are interested in their work as no mere textbook can interest them. Smith and Mess provide all the essentials for conducting classes by this method. WILHELM SEGERBLOM, Phillips Exeter Academy: You have brought out an unusual piece of work which I shall take unusual pleasure in going over carefully. I have already seen in it many things which I have long thought should be presented to elementary students. Some of them I have tried to work out in my own classes. HENRY HOLT AND COMPANY 19 W. 44th Street NEW YORK 6 Park Street 2451 Prairie Avenue CHICAGO THE HE plans of the Carnegie Foundation for the compulsory purchase of annuities are of concern to all college and university professors. The publications of the foundation have been freely distributed. The most serious criticisms of its attempt to control higher education in America will be found in the following articles in SCHOOL AND SOCIETY: The Carnegie Foundation for the Advancement of Teaching and the Case of Middlebury College: the late Josiah Royce. January 30, 1915. Ten Years of the Carnegie Foundation: Joseph Jastrow, October 7, 1916. Report of the Committee on Pensions of the American Association of University Professors. December 2, 1916. Life Insurance and Annuities for Academic Teachers: J. McKeen Cattell, November 9, 1918. The "Policies" of the Carnegie Company: J. McKeen Cattell. January 4, 1919. Supplementary Statement Concerning the Plan of Compulsory and Contributory Annuities Proposed by the Carnegie Foundation; Arthur O. Lovejoy and Harlan F. Stone. February 1, 1919.; Second Report of the Committee on Pensions of the American Association of University Professois. March 8, 1919. Annual Subscription $3 Single Copies 10 cents SCHOOL AND SOCIETY Published every Saturday by Publications of Carnegie Institution of Washington The publications of the Institution now number over 350 volumes, the subjects including Anatomy, Archeology, Astronomy, Botany, Chemistry, Economics and Sociology, Embryology, Experimental Evolution and Heredity, Engineering, Folk-Lore, Geology, History, International Law, Literature, Mathematics, Medicine, Nutrition, Philology, Physics, Zoology. Classified and descriptive lists will be sent postpaid on application. 248. BRITTON, N. L., and J. N. ROSE. The Cactaceæ. Descriptions and Illustrations of Plants of the Cactus Family. Quarto in 4 vols. Vol. I: In press. Vol. II: In press. 269. JOHNSON, DUNCAN S. The Fruit of Opuntia fulgida. Octavo, 62 pages, 12 plates. $1.25. 270. REICHERT, E. T. A Biochemic Basis for the Study of Problems of Taxonomy, Heredity, Evolution, etc., with especial reference to the Starches and the Tissues of Parent and Hybrid Stocks, and to the Starches and the Hemoglobins of Varieties, Species, and Genera. Quarto. In press. 279. HARRIS, J. ARTHUR, and FRANCIS G. BENEDICT. A Biometric Study of Basal Metabolism in Man. Octavo. In press. Distri284. LIVINGSTON, BURTON E., and FORRest Shreve, bution of Vegetation in the United States, as Related to Climatic Conditions. Octavo. In press. 286. WEAVER, JOHN E. The Ecological Relations of Roots. Octavo. In press. 287. SPOEHR, H. A. The Carbohydrate Economy of Cacti. Octavo. In press. All communications should be addressed to CARNEGIE INSTITUTION OF WASHINGTON WASHINGTON, D. C. The Philippine Journal of Science ALVIN J. COX, M.A., Ph.D., General Editor A Periodical Devoted to the Scientific and Commercial The Journal, now in its twelfth volume, is issued in four sections. Each section consists of six numbers a year, in separately paged and indexed, and is a complete publication in itself. Lancaster, Pa. Garrison, N. Y. Bureau of Science MANILA, P. I. LEI OUR SERVICE IN SUPPLYING LABORATORY APPARATUS GLASSWARE AND SUPPLIES has given entire satisfaction to so many laboratories. Numerous testimonials have reached us and our prompt and efficient service invites similar expressions from our new customers. Due to favorable connections with leading manufacturers, supported by a large stock, stored in our warehouse, we can offer prompt delivery. Our product is of foremost quality only and protected by the guarantee of our reputation. Our staff has been trained in the scientific application of most of the apparatus and instruments; which fact assists us to make our service satisfactory. With the aid of our mechanical and optical manufacturing departments we can attend to the construction, as well as to the repair of scientific apparatus, in accordance with the specifications of our patrons, and we know that this service has been appreciated very much by our clients. Upon receipt of a list of your laboratory re- Catalogs and supplementary publications will be furnished upon request; in your application please refer to "O-10." 30 East E.LEITZ 18th Street Organized Under the Laws of the State of New York EDWARDS GAS DENSITY BALANCE DEVELOPED BY J. D. EDWARDS AT THE BUREAU OF STANDARDS AND DESCRIBED BY HIM IN "TECHNOLOGIC PAPER No. 89" MANUFACTURED UNDER THE PERSONAL DIRECTION AND The Edwards Gas Density Balance provides a rapid and accurate means of determining the specific gravity of gas. In point of speed it is far superior to the method of direct weighing of the gas on an analytical balance and gives an accuracy only obtainable by the latter method when carried out with elaborate precautions. The apparatus consists of a balance beam carrying a sealed cylinder on one end and a counterweight on the other. The balance beam with its support is mounted in a gas-tight chamber to which is attached a mercury manometer. In operation, the balance case and manometer connections are filled with dry air through the inlet and the pressure adjusted by removing the excess gas through the needle valve until the beam just balances, as determined by observation through an adjustable lens of the cross line on the end of the beam. After determining this pressure, the balance is evacuated through the needle valve and filled with the gas; the pressure is then adjusted until the beam is again in equilibrium. The specific gravity of the gas is then the ratio of the total pressure (manometer reading plus atmospheric pressure) required to balance the beam in air to the total pressure required to balance it in gas. No. 29418. Edwards Gas Density Balance, complete with manometer and sufficient mercury for charging same, in carrying case, - - $100.00 The first lot of these Balances was sold before completion. A third lot, on which work was set aside because of war requirements, is now approaching completion. We expect to be able to make immediate delivery from actual stock on hand by the time this advertisement appears. Copy of our Supplement No. 28 and Bureau of Standards "Technologic Paper No. 89" sent upon request. ARTHUR H. THOMAS COMPANY IMPORTERS-DEALERS-EXPORTERS LABORATORY APPARATUS AND REAGENTS WEST WASHINGTON SQUARE PHILADELPHIA, U. S. A. SCIENCE FRIDAY, MARCH 14, 1919 THE UNIVERSITY AND PUBLIC HEALTH1 "THE end of our foundation is the knowledge of causes, and secret motions of things; the enlarging of the bounds of human empire, to the effecting of all things possible." In these words Francis Bacon in "The New Atalantis" summed up the aims of what he called "Salomon's House" or the "College of the Six Days' Works." Plato dreamed of a society dominated by guardian philosophers; Sir Thomas More pictured a happy people practising an economic communism; Bacon imagined a sage civilization obedient to science; he had faith in social progress by research and education. He foreshadowed with astonishing vision the essential features of the modern university. Salomon's House was lavishly equipped with buildings' apparatus and other facilities which would fill one of our faculties with joy, and a board of trustees or a legislature with consternation. There were caves, mines, lofty towers, lakes, hydraulic works, laboratories, orchards, gardens, kitchens, sound-houses, perspective houses, furnaces, mechanical shops, "dispensatories with shops of medicine," parks for animals "not only for view or rareness, but likewise for dissections and trials that thereby may take light what may be wrought upon the body of man." All this reads like the prospectus of a Western State University with a department of Agriculture and a standardized Medical School. The University of New Atalantis 1 Abstract of an address delivered at the anniversary exercises of Johns Hopkins University, Saturday, February 22, 1919, by George E. Vincent, president of the Rockefeller Foundation. |