INDEX TO ADVERTISERS PROFESSIONAL CARDS, PAGES XXVI AND XXVII xxiv Green-Starr Engineering Co. . . . xxiv Washington. Second cover page ... Weber, F. & Co., Draughting and Your courtesy in mentioning the Journal will be appreciated . XXV vi NEW SCIENTIFIC BOOKS A Text-book of Inorganic Chemistry Volume I Part I.-An Introduction to Modern Inorganic Chemistry By J. NEWTON FRIEND, H. E. V. LITTLE and W. E. S. TURNER Part II.-The Inert Gases By H. VINCENT A. BRISCOE With frontispiece, plate and 88 other illustrations. 385 pages. Octavo. Cloth. $3.00 net. This is the first volume in a new series of text-books dealing comprehensively with each branch of chemistry. While the books are not absolutely exhaustive, which would make them bulky and expensive, they give in detail the most important parts of each subject, and supplement lack of detail by copious references to the best literature. Every care has been taken to check the accuracy of the references, which will make the series a most valuable one. Refuse Disposal By ERNEST R. MATTHEWS With 8 detailed drawings and 91 illustrations in the text. 160 pages. 8vo. Cloth. $2.00 net. A practical manual for municipal engineers, members of local authorities, etc. It sets forth modern methods of collection and disposal, embodying the latest practice, and shows what is being done all over the world along this line. CONTENTS.-Collection of House Refuse, Unsatisfactory Methods of Disposal. Conversion into Manure. Destruction by Burning. Types of Destructors. The Meldrum Destructor. The Heenan Destructor. Other Types of Destructors. Dawson-Manfield Destructor. Installation for Villages, Hospitals, etc. Use for the Clinker. Chimney Construction. Steel Plate Chimney Construction. Principles of Vacuum Cleaning. Index. A Manual of Oils, Resins and Paints By HARRY INGLE, D.Sc., Ph.D., F.I.C. With many diagrams, figures and tables. 130 pages. 12mo. Cloth, $1.25 net. A work for students and those analysts and works chemists who have had little or no experience with oils in practice, but are familiar with general chemistry. In the general analytical portion several new features are noticed and obsolete tests omitted. In the technical portion the necessary tests have been stated and as far as possible the conclusions of practical value which should be drawn from given. CONTENTS. Introduction to Chemistry of Oils, Gums, etc. Physical Tests. Chemical Tests. Qualitative Tests for Oils. Classification of Oils. Systematic Examination of Oils, Fats and Waxes. Technological Analysis. Tables of Oil Constants. Index. J. B. LIPPINCOTT COMPANY PHILADELPHIA Your courtesy in mentioning the Journal will be appreciated THE MOORE & WHITE CO. PHILADELPHIA, PA., U. S. A. Paper-making Machinery Builders of Friction Clutch Pulleys Variable Speed Changes THE ALUMNI ASSOCIATION OF THE FRANKLIN INSTITUTE is always glad to refer inquiries for engineers, draftsmen, etc., to its members. Since its organization, the association has received many such requests and several past graduates of The Franklin Institute School of Mechanic Arts have been recommended to fill positions. Library of The Franklin Institute A most complete scientific and technical collection Electricity, chemistry, geology, mining and metallurgy, mechanics and engineering, physics, etc. Bound files of the leading technical magazines of all countries. Complete sets of the publications of the principal scientific societies of the world. United States and foreign patent reports. Translations The Library is prepared to undertake a limited amount of work in connection with the verification of references, translations and copying from English, Inquiries relating to the Institute and applications for membership SECRETARY OF THE INSTITUTE 13, 15, 17 South 7th Street Your courtesy in mentioning the Journal will be appreciated WILLIAM SELLERS & CO. INCORPORATED PHILADELPHIA, PA. Modern Machine Tools TOOL-GRINDING MACHINES High-Speed Traveling Cranes, Swing Cranes, &c. BORING AND TURNING MILLS DRILLING AND BORING MACHINES Improved Injectors for Boilers. SHAFTS, HANGERS, COUPLINGS, PULLEYS, ETC. :: FOR TRANSMITTING POWER Your courtesy in mentioning the Journal will be appreciated |