ORIGINAL COMMUNICATIONS (continued) — "On some Facts having a Bearing on Professor Hughes's Researches on Self-Induction as Manifested in Different Metals," and "On the Electro-Deposition of Copper," by Professor Moses G. "In reference to Remarks made in the Discussion on Mr. Preece's Professor W. Ostwald-" Eloctro-Chemical Researches" Lord Rayleigh-"The Energy of Magnetised Iron” Sir James N. Douglass-" Fluted Craterless Carbons," T. D. Lockwood-"Recent Advances in Telephony" H. Lechatelier-"Change in the E.M.F. of Thermo-Electric Couples, ... J. Wetzler "New System of Duplex Telegraphy" G. Colombo-"Central Station at Milan" P. H. Ledeboer-"Determination of the Coefficient of Self-Induction" 678 P. H. Ledeboer-" Measurement of the Coefficient of Self. Induction P. H. Ledeboer-" Relation between the Coefficient of Self-Induction P. H. Ledeboer-" Measurement of the Intensity of a Magnetic Field" Vaschy and de la Touanne-" Coefficients of Induction of Telephonic G. Quincke-"Properties of Dielectric Fluids" E. Edlund-"E.M.F. of the Electric Spark " Wybamo " Photometer for Electric Light" P. Cardani-"Alteration of the Diameter of the Spark Discharge, with Alteration of the Potential and Resistance" P. Cardani-"The Second Law of Harris " J. Bernstein-"On the Temporary Appearance of Electric Polari. F. Wächter-" Discrimination of Positive and Negative Electricity" 694 L. Palmieri "On the Electricity Produced by Flames" P. Langer—" Absorption of Light in Electric Conducting Media" J. W. Giltay-"Use of an Auxiliary Battery for Telephony ".. H. Wild-" On the Relations between the Variations of the Earth's ... ... ... W. Peukert—" Mean Intensity of the Magnetic Field of Dynamos in O. E. Meyer and F. Auerbach-"Theory of the Dynamo Machine " W. Kohlrausch-"Use of Spiral Springs in Measuring Instru- ments, and the Exactitude of Galvanometers Working with Anon.-"Observations on Storms over the German Telegraph System JOURNAL OF THE SOCIETY OF Telegraph-Engineers and Electricians. Founded 1871. Incorporated 1883. VOL. XV. 1886. No. 60. The One Hundred and Fiftieth Ordinary General Meeting of the Society was held at the Institution of Civil Engineers, 25, Great George Street, Westminster, on Thursday evening, January 28th, 1886—Mr. C. E. SPAGNOLETTI, M. Inst. C.E., late President, in the Chair. The minutes of the Annual General Meeting of December 10th, 1885, were read and approved. The names of new candidates for admission to the Society were announced and ordered to be suspended. The following transfers were announced as having been approved by the Council:— From the class of Associates to that of Members Donations to the Library were announced as having been received from the Colonial Office; the Smithsonian Institution; Professor E. J. Houston; G. M. Whipple, Esq.; A. Andersen, Member; W. Lynd, Associate; C, Mourlon, Foreign Member; and Willoughby Smith, Past-President; to all of whom the thanks of the meeting were unanimously voted. The LATE PRESIDENT: Gentlemen,-One of the most pleasing duties in connection with my Presidency devolves upon me this evening. It is that of presenting the premiums which have been awarded by the Council to those who have contributed the best papers during the year ending June last. I may perhaps be allowed to say, in the presence of our younger members, that I consider the honour of receiving a premium from a Society like this is very great indeed; because, if the papers are not really of true value, no premiums are given, and therefore for the author to obtain a premium the paper must necessarily possess considerable merit. The ability and reputation of our Council are well known, and it is a very great honour indeed for the author of a paper to have it selected by such experts as worthy of a premium among the productions that have been brought before the Society. I hope that many of our members will endeavour to gain a premium during the ensuing year, and will contribute papers the excellence of which may be rewarded by the Council of the Society. The first premium, being "the Society's Premium," value £10, has been awarded to Professor Oliver Lodge for his excellent paper-which brought forth two evenings' discussions-" On the Seat of the Electro-motive Force in a Voltaic Cell." Professor Lodge has chosen Ruskin's Works, and the volumes are here ready to be presented to him, but unfortunately his duties in Liverpool do not permit of his being present to-night, and he has commissioned Professor Perry-who, as you will recollect, crossed steel with him in scientific argument very closely—to receive the books for him; but unfortunately Professor Perry is also lecturing to-night, and cannot attend here until later in the evening, so that the books must remain on the table for the present. 66 The second, being the "Fahie Premium," value £5, has been awarded to Captain H. R. Sankey, R.E., Associate, for his paper on Some Experiments in Electrotyping with a Dynamo-electric Machine." You will all recollect that his paper was very interesting, possessed great merit, and was well received by the Society. Captain Sankey has selected an aneroid barometer, "Boucher's circular calculating machine," and "Gordon's Electricity," which I now have the pleasure of handing to him. a The next is the "Paris Electrical Exhibition Premium," value £5, awarded to Mr. W. H. Snell, Associate, for his paper, "On the Calculation of Mains for the Distribution of Electricity." I am very sorry, indeed, that on the occasion of that paper being read —which was at an Extraordinary General Meeting devoted to the purpose-I had not the pleasure of being present. It is the only occasion on which I was absent during the past year; but I have read the paper, and can support the selection of the Council in awarding this premium to Mr. Snell, to whom I now have the pleasure to hand these ten volumes of electrical works which he has himself selected. Now, having performed the routine duties of the office, it only remains for me to express the great pleasure I have in introducing to you my successor, Professor Hughes. The President, Professor D. E. Hughes, F.R.S., then took the chair. Professor G. FORBES: Might I ask, before we listen to your interesting remarks, Professor Hughes, for a few moments to perform what is a right and graceful act towards our late President. We know that the success and interest of our meetings depends very much upon the manner in which our President conducts his duties in the chair, and the way in which he introduces the subject and invites discussion upon it. Further, the position of the Society depends a great deal upon the dignity of the chair, in having a President who has a thorough business-like and regular habit; and I may say that we have seldom had a gentleman more suited to that double capacity than Mr. Spagnoletti. He has happily introduced subjects and invited discussions at every meeting at which he has been present, and has conducted the duties of the chair in so methodical and business-like a manner that I am confident of the support of the members present when I propose a hearty vote of thanks to Mr. Spagnoletti for the manner in which he has fulfilled the duties of President. Mr. W. T. ANSELL: I beg to second the proposition, and can |