THE CERTIFICATE OF MERIT ELLIS B. RIDGWAY, of Coatesville, Pa., for his Steam Hydraulic Elevator. THE JOHN SCOTT LEGACY MEDAL AND PREMIUM AWARDED BY THE CITY OF PHILADELPHIA ON THE RECOMMENDATION OF CHARLES S. BATDORF, of New York, N. Y., for his Coin Counting and Wrapping Machine. HALCOLM ELLIS, of Newark, N. J., for his Adding Typewriter. C. E. GUILLAUME, PH.D., of Sevres, France, for his Alloy "Invar." ALDUS C. HIGGINS, of Worcester, Mass., for his Electric Furnace in which Alundum is made commercially. CHARLES B. JACOBS, of New York, N. Y., for his Process of Producing a New Abrasive and Refractory Material, Alundum. C. FRANCIS JENKINS, of Washington, D. C., for his Motion Picture Apparatus. JESSE W. RENO, of New York, N. Y., for his Inclined Elevator or Escalator. ALLEN A. TIRRILL, of Pittsburgh, Pa., for his Automatic Potential Regulator. ADOLPH SPIELMAN, of Philadelphia, Pa., for his Cloth Cutting Machine. JOHN SCOTT RECOMMENDATIONS (Award pending) A. ATWATER KENT, of Rosemont, Pa., for his Unisparker. TERMS AND PRIVILEGES OF MEMBERSHIP The members of the Institute are divided into the following classes, viz.: Resident Members, Stockholders, Life Members, Permanent Members, Non-resident and Associate Members. Any one interested in the purposes and objects of the Institute and expressing a willingness to further the same may become a member when proposed by a member in good standing and elected by the Board of Managers. Terms.-Resident members pay Fifteen Dollars each year. The payment of Two Hundred Dollars in any one year secures Life Membership, with exemption from annual dues. Stock.-Second-class stockholders pay an annual tax of Twelve Dollars per share, and the holder of one share is entitled by such payment to the privileges of membership. Privileges. Each contributing member (including non-residents) and adult holder of second-class stock is entitled to participate in the meetings of the Institute, to use the Library and Reading Room, to vote at the Annual Election for officers, to receive tickets to the lectures for himself and friend, to attend the Section meetings and to receive one copy of the Journal free of charge, except associate members, who may not take part in elections. Permanent Members.-The Board of Managers may grant to any one who shall in any one year contribute to the Institute the sum of One Thousand Dollars a permanent membership, transferable by will or otherwise. Non-resident Members.-Newly elected members residing permanently at a distance of twenty-five miles or more from Philadelphia may be enrolled as Non-resident Members, and are required to pay an entrance fee of Five Dollars, and Five Dollars annually. Non-resident Life Membership, $75.00. Contributing members, if eligible, under the non-resident clause, on making request therefor, may be transferred to the non-resident class by vote of the Board of Managers, and are required to pay Five Dollars annually. Associate Members.-Associate members are accorded all the privileges of the Institute, except the right to vote or hold office, upon the payment of annual dues of Five Dollars. This class of membership is limited to persons between the ages of seventeen and twenty-five years. Upon reaching the age limit they become eligible to the other classes of membership. Resignations must be made in writing, and dues must be paid to the date of resignation. MEETINGS AND LECTURES 1914-1915 October 1, 1914-" The Ultra-Violet Rays and Their Application for the Sterilization of Water." By MAX VON RECKLINGHAUSEN, PH.D., The R. U. V. Company, Inc., New York, N. Y. A brief account will be given of the following subjects: The different sources of ultraviolet light, particularly the mercury vapor quartz lamp; various physical, chemical, and biological reactions of the ultra-violet rays; history of sterilization by these rays, and development of the modern apparatus for the sterilization of water by the ultra-violet rays and results obtained with such apparatus. Illustrated by experiments and lantern slides. October 8, 1914—“ Recent Developments in Cast Iron Manufacture.” By J. E. JOHNSON, JR., Consulting Engineer and Metallurgist, New York, N. Y. In this paper Mr. Johnson will discuss the present theory of cast iron, explaining its deficiencies, and pointing out the unknown or neglected quantities which cause them. He will connect up this completed explanation with the known facts of practice in regard to coke and charcoal irons, and will finally describe a method for converting ordinary coke iron into a product superior to the best charcoal iron, at low expense. Samples of the converted material will be shown, together with photomicrographs of its structure. The lecture will be illustrated by lantern slides. (Joint Meeting with the American Society of Mechanical Engineers.) October 15, 1914-" Recent Advances in Photographic Chemistry.” The lecture will include a discussion of methods of simultaneous development and fixing. and of development after fixing; use of motion pictures in education and research; actinic effects of ultra-violet and infra-red radiations; picture making in the dark; thermography. This lecture will be illustrated by lantern slides. (Joint Meeting with the Photographic Society of Philadelphia.) October 21, 1914-" The Earth, a Great Magnet." By L. A. BAUER, PH.D., D.Sc., Director, Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, D. C. The chief facts and latest results pertaining to the earth's magnetism will be given, as based largely upon the general magnetic survey of the earth, begun by the Department of Terrestrial Magnetism of the Carnegie Institution in 1904 and now two-thirds completed. The work and cruises of the non-magnetic ship Carnegie and the instrumental appliances and methods used in the observational work will be briefly described; also an account will be given of the various expeditions sent under Dr. Bauer's direction to distant and more or less unexplored countries. The lecturer will aim to relate the chief results and will endeavor to show the possible bearing of researches in terrestrial magnetism on other mooted questions in terrestrial and cosmical physics. The lecture will be illustrated by experiments and lantern slides. October 29, 1914-" The Physics of the Photographic Process." Director of Research Laboratory, Eastman Kodak Company, Rochester, N. Y. The effect of exposure and development upon photographic materials will be discussed as being conditioned by the granular structure of the materials, the effect of light being to produce a very small change in each individual grain. The amount of energy required to produce this change can be shown to be of the same order as the quantum. The relation between the number of changed grains and the energy expended will depend upon, and will define, the properties of the sensitive material. The size of the unit grains and the variations in their size can be shown to bear direct relations to the sensitiveness and to the resolving power of the materials. (Joint Meeting with the Photographic Society of Philadelphia.) October 30, 1914-" Architectural Acoustics." By WALLACE C. SABINE, SC.D., Dean, The Graduate School of Applied Science, Harvard University. This lecture, which will be a general survey of architectural acoustics, will deal in turn with the subjects of Reverberation, Echo, Interference, and Resonance, and will be illustrated by lantern slides taken from solutions of the problems presented by a number of important buildings in America and abroad. November 5, 1914-“Artistic Painting and the Secret of the Old Masters." Director, Research Laboratory, Toch Brothers, The old masters, particularly of the Dutch and Italian schools, from the fourteenth to the seventeenth centuries, were supposed to have had a secret relating to pigments which made their paintings permanent, and there are those who still believe in such a secret. The belief probably originated with Sir Joshua Reynolds, who sought continuously for some form of permanent pigment. As a matter of fact, the old masters had few colors, about ten in number, all earth colors excepting one, "Madder Lake.' They did, however, exercise the greatest care in the preparation of and the application of their paints. Dr. Toch will show experiments illustrating the effect of light, chemical gases, and the air of modern cities on pigments. He will also show a number of lantern slides of ancient and modern paintings. November 12, 1914-" Biochemical and Engineering Aspects of Sanitary Water Supplies." By GEORGE W. FULLER, C.E., Consulting Hydraulic and Sanitary Engineer, New York, N. Y. This lecture, partly illustrated, will deal with the amount of pollution which ought not to be exceeded in a public water supply prior to its treatment; means of measuring such degree of pollution; methods available for and results accomplished by purification of such water supplies; and the influence upon the public health, with respect to water-born diseases, of causes other than public water supplies. November 18, 1914-" The Photography and Analysis of Sound Waves." Professor of Physics, Case School of Applied Science, The general nature of sound and sound waves will be discussed, and a detailed explanation of noise and tone, and of pitch, loudness, and tone quality will be given. Sound originates in either simple or composite harmonic motions, and these can be represented by suitable curves; a study of these curves leads to the law of tone quality, and to a definition of simple and ideal musical tones. A method for obtaining photographic records of sound waves will be described, and various photographs will be shown. Pourier's analysis permits a scientific study of such records; instruments and methods for analyzing and synthesizing harmonic curves will be described. By means of the Phonodeik, "living " sound waves from the speaker's voice and from various musical instruments will be projected on the screen. The lecture will be illustrated with slides, models, and experimental demonstrations. December 3, 1914—“Modern Views on the Constitution of the Atom." By A. S. EVE, D.Sc., Professor of Physics, McGill University, Montreal, Canada. There is converging evidence, no longer merely speculative, enabling us to form a conception of the interior of an atom. Such evidence is obtained from (1) the collisions of alpha particles with molecules, (2) crystal reflection of Röntgen and gamma rays, (3) modern radiochemistry. The lecture will deal with the above, with the nature of the atomic number, and with Bohr's speculations, using Planck's quantum. The lecture will be illustrated by experiments and lantern slides. December 10, 1914-" The Modern Submarine in Naval Warfare." Member of Council, Society of Naval Architects and Marine Engineers; Conn.; formerly Naval Constructor, U. S. N. In this lecture Mr. Robinson purposes to discuss the field of usefulness of the modern submarine; to show the present limitations of its development, with the causes for such limitations. and to endeavor to point the direction which its future development will take. The tactics of the submarine will be touched upon. December 16, 1914-“ An American Engineer in China." By WILLIAM BARCLAY PARSONS, C.E., LL.D., Consulting Engineer, New York, N. Y. In this lecture Mr. Parsons will discuss China as a field for engineering developments, transportation, mineral wealth, etc., describing what has been done to date, under what methods of law, finance, and construction, and what is immediately necessary. The lecture will be illustrated both by lantern slides and stories of Mr. Parsons's personal experience. January 7, 1915-" The Organization, Character of Personnel, Scope of Work, and Methods of Operation and Control of a Large Municipal Highway Department." By WILLIAM H. CONNELL, Chief, Bureau of Highways and Street Cleaning, In this lecture will be described a modern highway organization, the personnel best suited for the conduct of its work. A general outline of its scope, embracing construction and maintenance of highways; laying out of parks and parkways; street cleaning; collection of ashes, garbage, and refuse; sub-surface structures and the general work coming under the jurisdiction of a bureau of this kind will be given. The lecture will be illustrated by lantern slides. January 14, 1915-" Modern Steels and Their Heat Treatment.” BY ROBERT R. ABBOTT, B.S., E.M., Metallurgical Engineer, The Peerless Motor Car Company, Cleveland, Ohio. The development and use of modern alloy steels will be briefly considered, and the theory underlying the heat treatment of steels will be discussed. A comparison will be made of the physical properties obtained by heat treatment of different types of steel with untreated steels. The commercial application of heat treatment will also be considered. The subject will be illustrated by lantern slides. (Joint Meeting with the American Society of Mechanical Engineers.) January 20, 1915-" Conditions Affecting the Success of Main Line Electrification." By WILLIAM S. MURRAY, Consulting Engineer, New York, New Haven, and Hartford Railroad, Hartford, Conn. Mr. Murray will bring out the essential, capital and operating differences between steam and electric traction, and show from an economic standpoint where electricity is justified. Lantern slides of typical four- and six-track electrification will be shown. (Joint Meeting with the Philadelphia Section, American Institute of Electrical Engineers.) January 28, 1915-" The Production of Light by Animals." By ULRIC DAHLGREN, PH.D., Professor of Biology, Princeton University, Princeton, N. J. An insight into the wide distribution of light-producing organisms will be given by describ ing typical forms from several of the larger groups of the animal kingdom. The anatomical and histological structure of the light-producing organs of these animals will be explained together with the accessory structures; reflectors, lenses, and focusing devices, diaphragms, pro tective mantles, colored screens, etc. The uses of the light as mating, protective and warnin signals, and for illumination and ornamentation will also be discussed. Finally, the chemica and physical side of the subject will be treated, together with the physiology of light production the different methods of oxygen supply, internal and external methods of combustion. Th lecture will conclude with some remarks relating to a possible better light production by man The lecture will be fully illustrated. |