February 14, 1918—“ Refractory Materials and High Temperature Measurements." BY. C. W. KANOLT, PH.D., Bureau of Standards, Washington, D. C. The lecture will deal with the definition of the high temperature scale; instruments for measuring high temperatures, including optical and radiation pyrometers, thermocouples, and resistance thermometers; materials capable of withstanding high temperatures, and their properties and uses; the methods of testing such materials, including determinations of melting temperature, softening temperature, boiling temperature, transition temperature, thermal conductivity, thermal expansion, and other properties; the resistance of structures and structural materials to fire. Illustrated. February 20, 1918-" Dyestuffs." BY LOUIS JOSEPH MATOS, PH.D., Technical Chemist and Chemical Engineer, Cassella Color Company, New York City, N. Y. The lecture will broadly cover the production, development, and application of dyestuffs, both natural and of coal-tar origin, and also the develop ment of the "intermediate" industry in this country since the beginning of the war. Reference will be made to the present opportunities for closer relations between the engineer and chemist in the field of industrial organic chemistry, and to the training of chemists for such work. Illustrated. February 28, 1918-" The Production of Optical Glass for Military Purposes." BY F. E. WRIGHT, PH.D., Captain, Ord., U. S. R., Geophysical Laboratory, Carnegie Institution of Washington, D. C. At the time this country entered the war one of the serious problems which faced the Army and Navy was the question of optical glass for use in military instruments. At the request of the National Research Council, the Geophysical Laboratory was assigned to the task of increasing both the quality and the quantity of optical glass produced in this country. Hearty coöperation with the Bausch & Lomb Optical Company was obtained, with the result that within three months' time they were able to furnish glass to other firms engaged in work on military instruments. A summary of the essential features in the production of optical glass will be given. Illustrated by lantern slides. March 7, 1918-"Scientific Research in the Canning Industry." By W. D. BIGELOW, PH.D., CHIEF CHEMIST, National Canners' Association, Washington, D. C. Although depending on scientific principles, the canning industry has grown up with little assistance from scientific men. It is only recently that the industry has recognized the need of scientific research. The address will describe briefly the characteristic features of commercial and domestic canning and will discuss the past and present scientific work of the industry. March 14, 1918-" The Importance of Gauging in the Manufacture of Munitions." BY LOUIS A. FISCHER, B.S., Bureau of Standards, Washington, D. C. The lecture will review the methods of manufacturing munitions and show the necessity for a proper system of gauging the essential parts of shells, guns, rifles, etc., when such munitions are manufactured in large quantities. The failure to realize the importance of gauges, coupled with the inability to secure gauges in needed quantities, has as much as any one thing retarded the defeat of Germany and her allies. March 20, 1918—" Characteristics of American Coals in Byproducts Coking Practice." BY F. W. SPERR, JR., CHIEF CHEMIST, H. Koppers Company Laboratories, Mellon Institute, Pittsburgh, Pa. The present rapid replacement of the old wasteful beehive coke oven by the modern by-product oven is producing some interesting economic developments in the coal industry. Not only are millions of tons of high-grade coking coal being saved every year by the superior conservation of the by-product oven, but our reserves of coal available for making high-grade coke are enormously increased on account of the ability of this oven to coke a greater variety of coals than can be dealt with by the old process. The study of the behavior of various American coals in the by-product oven is of great importance in this connection, and it is the purpose of this lecture to give some of the results of such a study. The lecture will discuss the accepted scientific explanation of the coking property of coal and some of the important phenomena of the coking process. The behavior of various typical coking coals in the by-product ovens will then be taken up, and the practical results of coking such coals will be given with respect to the yields of the various by-products and the quality of the coke produced. The lecture will be illustrated by lantern slides. March 28, 1918-" Oceanography." BY GEORGE W. LITTLEH ALES, C.E., Hydrographic Engineer, U. S. Hydrographic Office, Professor of Nautical Science, The George Washington University, Washington, D. C. The rise of the science of oceanography from its ancient origin and the methods and instruments of deep-sea research. The depth and bulk of the ocean, and the salinity, gases, temperature, pressure, compressibility, and viscosity of its waters. Vision and the penetration of light in the depths. The distribution of atmospheric pressure on the ocean and the winds that blow over its surface. Oceanic movements and circulation. Life in the ocean, and marine deposits on the bottom. Illustrated. April 4, 1918-" Explosives." BY CHARLES L. REESE, PH.D., Chemical Director, E. I. du Pont de Nemours and Company. April 11, 1918—“ An Explanation of the Flotation Process." BY ARTHUR F. TAGGART, E.M., Assistant Professor of Mining Engineering, Sheffield Scientific School, Yale University, New Haven, Conn. Within the last four years the tonnage of copper, lead, and zinc ores treated yearly by flotation in the United States has increased from a negligible quantity to somewhat over 30,000,000 tons. This figure represents a greater tonnage than is now treated by water concentration, which method, before the advent of flotation, was applied to the great majority of these ores. Furthermore, flotation has made possible the economical concentration of the finest particles produced in crushing, hitherto the bane of mill operators. The process consists, fundamentally, in forming a froth similar to a mass of soap bubbles, entrapping in the bubble walls the valuable mineral and floating it off from the body of the ore pulp. Illustrated by experiments. April 17, 1918-"The Chemical Dependency of the United States." By ALLERTON S. CUSHMAN, PHD., MAJOR ORD., U. S. R., Formerly Director, The Institute of Industrial Research, Washington, D. C. This lecture will discuss the influence on American industry and on national defence of a number of important chemicals which either do not exist or are not produced in this country and for which we are dependent on overseas supplies. The lack of some of these chemicals, such as nitrates, has become widely known and Congress has passed bills and made appropriations looking to remedial measures. Other chemicals which the public has never even heard of are absolutely necessary to industry and national defence. The lecturer will especially discuss our national situation in respect to our overseas dependency. April 25, 1918-"High Tension Phenomena and Power Transmission." BY CHARLES P. STEINMETZ, PH.D., Chief Consulting Engineer, General Electric Company, Schenectady, N. Y. The lecture will review the present state of the art with regard to high-voltage transmission, discuss the reasons which led to the rapidly increasing importance of electrical transmission, and more particularly deal with the peculiar phenomena appearing at the very high voltages which are being approached in power transmission, with the work done in the last years in studying these phenomena and in controlling their effects so as to overcome the limitation imposed by them on high-voltage power transmission. Joint meeting with the Philadelphia Section, American Institute of Electrical Engineers. May 15, 1918-Conferring of The Franklin Medal. A special programme will be announced later. MEMBERSHIP DIRECTORY HONORARY MEMBERS. Brigadier General JAMES ALLEN, U.S.A. (Retired), Army and Navy Club, Washington, D. C Dr. CHARLES F. HIMES, Carlisle, Pennsylvania. Dr. T. C. MENDENHALL, Ravenna, Ohio. Rear Admiral JOSEPH B. MURDOCK, U. S. N., Danbury, New Hampshire. Mr. RALPH W. POPE, 570 Cherry Street, Elizabeth, New Jersey. Prof. H. TRESCA. Prof. WM. CAWTHORNE UNWIN, Palace Gate Mansions, Kensington, London, England. Dr. GEORGE M. WARD. Dr. H. W. WILEY, Room 1120, Woodward Building, Washington, D. C. Lieut. A. B. WYCKOFF, 131 East H Street, Ontario, California. CORRESPONDING MEMBER. Mr. T. COMMERFORD MARTIN, 29 West 39th Street. New York City, New York. PERMANENT MEMBER. Mr. ANDREW CARNEGIE, 91st Street and Fifth Avenue, New York City, New York. Mr. ISAAC B. THORN. “IN MEMORIAM." MEMBERS. ABBOTT, LYLE STOCKTON, Civil Engineer, 300 Willow Avenue, River Edge, New Jersey. ABBOTT, ROBERT R., Metallurgical Engineer, The Peerless Motor Car Company, Cleve land, Ohio. ABEL, CHARLES, Painting and Paper Hanging, 300 Fifth Avenue, Haddon Heights, New Jersey. ACHESON, EDWARD G., Manufacturer, Acheson Corporation, Æolian Building, 35 West 42d Street, New York City, New York. ADDICKS, WALTER R., Vice President, Consolidated Gas Company of New York, 130 ADSIT, CHARLES G., Engineer, Ponce de Leon Apartments, Atlanta, Georgia. AKIMOFF, NICHOLAS W., Mechanical and Hydraulic Engineer, 1013 Harrison Building, ALBERTSON, W. H., Builder, 334 North Preston Street, Philadelphia, Pennsylvania. ALBRECHT, A. C., Secretary, North Brothers Manufacturing Company, Lehigh Avenue and American Street, Philadelphia, Pennsylvania. ALEXANDER, J. R., General Road Foreman of Engines, Pennsylvania Railroad Company, Altoona, Pennsylvania. ALLAN, ANDREW, JR., Manufacturer of Bearing Metals, Harrison, New Jersey. ALLEMAN, GELIERT, Professor of Chemistry, Swarthmore College, and for mail, 8 Whittier Place, Swarthmore. Pennsylvania. ALLEN, C. W., $23 O'ey Street Reading. Pennsylvania. ALLEN, FRANK S., Boiler Inspector, 48 Fairfield Avenue, Hartford, Connecticut. |