Rotary Converters. .....W. E. Goldsborough. Relative Performance and Efficiency of Direct-Current and In duction Motors W. E. Goldsborough. .W. E. Goldsborough. .W. E. Goldsborough. Air Gap and Core Distribution, III. Improved Apparatus for Arc Light Photometry. W. E. Goldsborough. .C. P. Matthews. Second Report to Committee on Arc Light Photometry of National Electric Light Association... Theorem in the Theory of Numbers. ..C. P. Matthews. On the Decomposition of Prime Numbers in a Biquadratic Number Field Note on "Multiply-Perfect" Numbers. The Ethics of Wealth.... Hillern's "Hoeher als die Kirche," edited by. Etymologies-Modern Language Notes. Jacob Westlund. John Heiss. No. 16. Some Problems in the Business Life of a Technical Graduate.... No. 17. The Duties of a General Manager. . Edwin M. Herr. Lucius E. Johnson. In the laboratory of sanitary science, ninety-nine examinations of water, pathological material, culture tubes, etc., were made, mainly upon the request of physicians. In the chemical laboratory, many analyses of mineral waters, ores, soils, drugs, sugar beets, etc., were made upon applications of private parties. In the testing laboratories, hundreds of commercial tests were made upon a great variety of materials and products as follows: Stay bolts; steel bars; Brady steam turbine; Buckeye brake shoes; Pittsburgh brake shoes; Drexel brake shoes; Sargent brake shoes; Corning brake shoes; samples of brick; bridge timber; cast steel; cement; links of chain; pulling test of Unity coupler; draft rigging; malleable iron springs; Whitfield engines Nos. 1 and 2; Holly pumping engines; Hibbard triple valves; Norton ball bearing jack; samples of tile; of aluminum; of rails; of specimens of concrete. On request of Governor Durbin an investigation and report was made upon the heating system of the Indiana State Prison. A very important phase of research work at Purdue is that of an official character conducted in coöperation with technical and scientific societies. In this connection the University has been made the depository of a large amount of valuable apparatus, unique in kind and of very great value for research as well as to students in the prosecution of their work. Notable among these official tests were the following: With the Master Car Builders' Committee, on triple valves and brake shoes; with the Traveling Engineers' Committee on the use of the steam indicator as an aid to the traveling engineer; with the committee of the National Electrie Light Association, on are light photometry. Beside this work of publication and investigation which was brought to some degree of definite conclusion during the year, a great many other lines of research have received attention and have been brought to a more or less advanced stage of completion. Some of the more important of these are as follows: The relative values of wood, anthracite coal, soft coal and natural gas for domestic heating. Comparative tests of arc light carbons. Development of improved photometer for the measurement of mean candle power of incandescent lamps. Relative methods of carbon and woven wire dynamo brushes. Investigation of the magnetic properties of commercial irons. Development of compact form of direct reading transmission dynamometer. Tests of a 15 horse-power Wagner motor. Tests of latest types of Westinghouse transformers. Researches upon the rusts peculiar to grasses and sedges. Researches upon concrete, with regard to (a) coefficient of ex pansion, (b) modulus of elasticity. Feeding experiments with live stock. Experiments upon soil cropping and fertilization. Studies of varieties of grasses and fruits. Investigations in combating injurious insects. Chemical researches: Quantitative investigations of adsorption. Constitution of di-acyl derivatives of amido-phenols. Researches on the effect of culture media on results of water an alysis. On the theory of algebraic number fields. Studies of the forest trees of Indiana, Illinois and Ohio. Studies of blood crystals. Microscopic studies of wood. These various activities of the faculty are primarily of great value to the student who frequently shares in the work of observation and recording of data. He is thus brought in touch with the scientific and commercial world and feels that his work and study is of a character which has some value. On this account alone these efforts of the faculty are justifiable, but it is felt that they also discharge in some slight degree the obligations felt toward the public service and public good by a public institution. IMPROVEMENTS AND ADDITIONS TO RESOURCES. IMPROVEMENTS. The building originally erected by John Purdue and used at first as a general college building and later as a dormitory, has been partially remodeled for use as a recitation hall. The south half of the building was stripped of all interior finish, certain partition walls removed, and the whole finished in oak and hard pine so as to give thirteen entirely acceptable rooms for recitation or instructional purposes. A second story has been placed upon the agricultural chemical laboratory for the purpose of securing additional and much needed facilities for instruction in agricultural chemistry. This room has been fitted with the necessary laboratory equipment, including desks, plumbing apparatus and supplies, and constitutes a valuable addition to the facilities of the school of agriculture. Many other minor improvements in the form of repairs to buildings and equipment have been made as needed. ADDITIONS TO RESOURCES. In pursuance of the policy of the University, numerous and valuable additions have been made to the equipment for instruction in the form of books, apparatus and machinery, including also the purchase of several choice specimens of live stock for the School of Agriculture. In all, these additions to the equipment involved an expenditure of about $10,000 during the year, not including the amounts paid for current supplies. The University has received numerous donations and loans of apparatus, machines and materials, the pecuniary value of which, amounting to thousands of dollars, is still of minor importance as compared with the generous good will displayed by these friends of the institution. Chief among these items has been the deposit with the University of three railway locomotives, destined to form the nucleus of an important and unique railway museum. These locomotives are types of early construction and design no longer in use. They are of historic interest as well as of great value to the student of locomotive design, and their preservation under the auspices of Purdue University is wholly appropriate. The three engines thus far secured are as follows: One, the gift of a western road which for the present desires its name to be unknown, is of the eight wheeled American type as built thirty years ago, and represents the class of engine which first performed the transcontinental service of our country. The second engine comes through the courtesy of the Baltimore & Ohio Railway and represents the "camel back" type which has so long been in service on that road. The third is the English engine, "James Tolman," which was exhibited at the World's Fair in 1893 and has since been in the keeping of the Chicago, Milwaukee & St. Paul Railway. One of these, the "James Tolman," has already been sent to the University; the other two will be delivered during the coming year. Other important loans and donations are as follows, although no attempt is here inade to give a complete list of the same: A valuable specimen of primitive track from the State of Georgia, through the courtesy of Mr. Theo. D. Kline, General Superintendent Central Railway of Georgia. Two No. 3 couplers, presented by the National Malleable Castings Company. One Crosby spring seat valve, from the Crosby Steam Gage and Valve Company. A Metropolitan injector, from the Hayden & Derby Manufac turing Company. One 15-ton Norton ball-bearing jack, from A. F. Norton. One pair Alexander pressed steel car replacers, from the Alexander Car Replacer Manufacturing Company. One feed valve for air brake rack, from Westinghouse Air Brake Company. One pump governor, from the Westinghouse Air Brake Co. Two special transformers, built and donated by the courtesy of J. J. Wood, of Ft. Wayne Electric Works. Two improved King wattmeters, donated by the same. |