action, the following names which will be printed in the next issue of the Transactions, together with such names as may be handed in hereafter: Name. Etheridge. E. L. Lindner, Chas. T. Williams, Frank A. Moore, D. Mcfarlan, Sturtevant, Charles L. Comstock, Louis K. Mustin, Herbert S. Brown, Harold P. Warner, Chas. H. Roberson, Oliver R. Address. Inspector, Electrical Engineering Inspector, Electrical Engineering Safety Insulated Wire and Cable Endorsed by. L. S. Boggs. O. G. Dodge. Wm. II. Cothren. L. S. Boggs. O. G. Dodge. W. H. Cothren. W. J. Hammer, F. R. Upton. W. T. M.Mottram. Electrical Engineer,General Elec- T. C. Martin, trie Co., 44 Broad Street, New Jos. Wetzler. York City. Edwin J. Houston. Mansfield, Arthur Newhall Assistant Electrician, Amer- F. A. Pickernell. ican Telephone and Teleg. Co., Chas. R. Cross. 153 Cedar St., New York City. G. A. Hamilton. Patent Attorney, Atlantic Build- W. A. Rosenbaum. ing, Washington, D. C. Townsend VVolcott. F. L. Freeman. Assistant Professor of Electrical Edwin J Houston. field Gas and Electric Light Co., Electrician, Western Uuion Tele- Chas. R. Cross. H. V. Hayes. Geo. W. Blodgett. Frank J. Sprague. C. T. Hutchinson. Geo. P. Low. Edw. Durant. James Hamblet. P. Wintringham. W. J. Hammer. W. J. Jenks. A. E. Kennelly. W. J. Hammer. H. A. Foster. Wason, Leonard C. Sahulka, Dr. Johann Stevens, W. Le Conte, Shea, Daniel W. Head Draughtsman with F. S. Docent of Elcctrotechnics, Tech- E. A. Merrill. James Hamblet. J. P. B. Fiske. Chas. R. Cross. F. S. Pearson. Ralph W. Pope. N. S. Keith. Townsend Wolcott. Professor of Physics, Rensselaer Samuel Sheldon. Assistant Professor of Electrical Samuel Sheldon. Louis Duncan. Samuel Reber. H. S. Hering. T. C. Martin. Ralph W. Pope. G. S. Albanese. H. V. Hayes. Francis Blake. I. H. Farnham. Chas. R. Cross. E. M. Barton. P. H. Alexander. Mckay, C. R. Members are requested to scrutinize this list carefully, and promptly notify the Secretary if there be any objection to their election. Consulting Engineer, 140 South Electrical Engineer, Piazza Sta- President. The American Bell Telephone Co., 125 Milk Street, Boston, Mass. Dept., Western Electric Co., 227 S. Clinton St., Chicago, III. Supt. of Construction, Western J. Stanford Brown. Electric Co., 393 Pleasant Ave., New York City. Bureau of Awards, World's Fair, Ithaca, N. Y. North Industry, Ohio. Electric and Manufacturing Co. Pittsburg, Pa. R. B. Owens. B. F. Thomas. Chas. E. Emery. R. B. Owens. B. F. Thomas. Chas. E. Emery. Chas. F. Scott. F. Stuart Smith. Student in Electrical Science, Galesburg, 111. J. N. Johnson. Ralph W. Pope. Chas. E. Dressier. R. W. Pope. Fred. DcLand. Wm. D. Ray. R. B. Owens. W. E. Shepard. H. A. Foster. H. H. Eustis. Graduate Student, Johns Hopkins University, 1104 McCulloh St., Baltimore, Md. A. B. See Manufacturing Co. Geo. D. Shepardson. 442 Henry St., Brooklyn, N. Y. Alonzo B. See Inspector, City Electrical In- C. C. Haskins, spection, 15City Hall, Chicago, C. G. Armstrong. 111. Alex. Dow. Report of Meeting of Board of Examiners, October 3d, 1893. Present—Messrs. W. B. Vansize, Chairman; E. T. Birdsall. G. A Hamilton and E. P. Thompson ; R. W. Pope. Secretary, present ex officio. The Prksidknt :—If the Institute will pardon me, I would like to bring up, somewhat out of place, an important matter which will take but a moment. At the last meeting I made certain recommendations in my inaugural address concerning work which it was proposed that the Institute should undertake, some few matters which were left incompleted by the late Electrical Congress. The committee appointed for this purpose,now offers the following provisional report. I have been asked to read it, as chairman of the committee. "Report of the Committee appointed by the Institute to consider certain matters of general importance in electrical engineering that hare incidental!!/ been left undetermined by the recent Electrical Congress at Chicago." "Your committee considers that there are four subjects of sufficient importance to call for the consideration of the Institutk." "1. The search for an accurately reliable concrete standard of light." "2. The establishment of a unit and standard of illumination." "3. The recommendation of certain practical magnetic units." "4. The establishment of certain precedents in regard to nomenclature." "Your committee recommends that an appeal be made to the leading universities and colleges of the country, possessing electrical laboratories, for aid in dealing with the first two considerations regarding illumination." "The last two considerations are recommended for relegation to the regular committee of the Institittk on units and standards." Edwin J. Houston, Chairman. Dr.. Emery :—-I move that the report be accepted and that the action recommended be taken. [The motion was carried.] The Peesident :—Gentlemen, I would like to say a few words. I trust the Institute will do all that it can to further work of this character. I feel that in undertaking it the Institute is entering upon an era of usefulness greater even than the marked usefulness it has shown in the past. We certainly have in the American Institute Of Electrical Engineers an exceedingly able body of men. We are competent to take up questions of this character and thoroughly deal with them. The Council urges on each and all of you the importance of this work. As to whether or not it will be successful depends of course entirely on the amount of intelligent effort which is put into it. If we all pull together and work in this matter we can do a great deal of good to that science of which we are so fond. It lias been determined to make this distinctively Institute work, so that nobody will be asked to take part in the work who is not a member of the Institute. 1 would like to say on behalf of the committee that I represent, that it will be pleased to receive suggestions from any members of the Institute, either as regards the method of carrying on this work, or the names of the parties to whom it would be proper to relegate it. The work will be apportioned somewhat in this way: it is our idea to invite co-operation of every institute of learning, such as a college or university, or any institution that has a good working physical laboratory. Local sub-committees will be appointed to undertake experimental work to determine these quantities. I take great pleasure in introducing to you Dr. Frederick Bedell, who will read a paper on "Hedgehog Transformer and Condensers." American Institute of Electrical Engineers^ HEDGEHOG TRANSFORMER AND CONDENSERS. BY FREDERICK BEDELL, K. B. MILLER AND G. F. WAGNER. The transformer is an instrument which still continues to attract the attention of the scientist and of the engineer, and no method for its investigation and study is more interesting than the experimental method whereby the instantaneous changes in the periodically varying quantities are made known. We refer to the method of instantaneous contact. The transformer with an open magnetic circuit has been the subject of much controversy, and it is upon such a transformer that the following experiments were made. We have no intention, however, of reviving the question of "open versus closed magnetic circuit transformers," which received so much attention a few years ago. In this investigation a modification of the method of instantaneous contact was applied to the study of an open-magneticcircuit transformer known as the" Hedgehog," experiments being made, first with the transformer under usual conditions, and then with condensers connected in parallel with the primary. A large part of the credit for this work should be given to Prof. Ryan, who was interested in it from the start, and to whom we are indebted for valuable assistance throughout the investigation. For convenience, we will divide the paper into three parts, describing: first, the apparatus and methods of measurement; second, the experiments with the transformer alone under the ordinary conditions of working on a 1,000-volt circuit; and third, the experiment in which condensers were shunted around the primary of the transformer. |