"TELEPHONE TRANSMISSION: Prof. J. A. Fleming, The Propagation of Electric Currents in Telegraph and Telephone Conductors; J. G. Hill, Telephonic Transmission; Gherardi & Jewett," Telephone Repeaters ( Journal of the American Institute of Electrical Engineers, Oct. 1919); B. Cohen & J. G. Hill, "Long Distance and Cable Telephony" ( Journal of the Institute of Post Office Electrical Engineers, 1916); H. W. Malcolm, The Theory of the Submarine Telegraph and Telephone Cable; A. E. Kennelly, The Application of Hyperbolic Functions to Electrical Engineering Problems; Professional Papers of the Institution of Post Office Electrical Engineers: A. W. Martin, The Loading of Telephone Cable Circuits; A. G. Lee, Telephone Transmission; C. E. Hay, Alternating Current Measurements; J. G. Hill, The Loading of Aerial Lines; B. S. Cohen, Telephonometry; A. B. Hart, Telephonic Repeaters; C. Robinson & R. M. Chamney, Telephone Relays. General References To Periodical And Society Publica Tions: Arnold, H. D., and Crandall, I. B., "The Thermophone as a Precision Source of Sound," Physical Review (v. 10, July 1917); Blackwell, O. B., and Colpitts, E. H., "Carrier Current Telephony and Telegraphy" ( A. I. E. E. Journ., April, May and June 1921); Campbell, G. A., "Mutual Inductances of Circuits Composed of Straight Wires," Physical Review (v. 5, June 1915); Carson, J. R., "On a General Expansion Theorem for the Transient Oscillations of a Connected System," ibid. (v. 10, Sept. 1917); id., " Theory and Calculation of Variable Electrical Systems," ibid. (v. 17, Feb. 1921); id., " Propagation of Periodic Currents over Non-Uniform Lines" ( Electrician, March 4 1921); id., " Wave Propagation over Parallel Wires: the Proximity Effect" ( Phil. Mag., April 1921); Carson, J. R. and Northrup, E. F., "The Skin Effect and Alternating Current Resistance" ( Franklin Inst. Jour., Feb. 1914); Carty, J. J., "The Telephone Art," ibid., July, 1916; Colpitts, E. H., and Craft, E. B., "Radio Telephony" Trans. Am. Inst. Elec. Eng. (p. 305, 1919); Fondiller, W., and Martin, W. H., "Hysteresis Effects with Varying Superposed Magnetizing Forces" ( A. I. E. E. Jour., Feb. 1921); Fry, T. C., "Thermionic Current Between Parallel Plane Electrodes; Velocities of Emission Distributed According to Maxwell's Law," Physical Review (v.17, April 1921); id., " The Solution of Circuit Problems," ibid. (v. 14, Aug. 1919); Gherardi, B., "The Commercial Loading of Telephone Circuits in the Bell System," Trans. Am. Inst. Elec. Eng. (p. 1743, 1911); id., " Joseph Henry's Experiments in the Albany Academy, 1827-32, Interpreted in the Light of the Present Day" ( 13th Report of the Director of New York State Museum, 1916); Gherardi, B., and Jewett, F. B., "Telephone Repeaters," Trans. Am. Inst. Elec. Eng. (p. 1287, 1919); id.,"Progress in the Art of Communication" ( Electrical World, Jan. 24 1920); Heising, R. A., "The Audion Oscillator," Physical Review (v. 16, Sept. 1920); id., " The Audion Oscillator" ( A. I. E. E. Jour., April and May 1920); Jewett, F. B., "Industrial Research with Some Notes Concerning its Scope in the Bell Telephone System," Trans. Am. Inst. Elec. Eng. (p. 841, 1917); Kennelly, A. E., Laws, F. A., and Pierce, P. H., "Experimental Researches on Skin Effect in Conductors," ibid. (p. 1953, 1915); Mills, J., "A General Method for Periodic Currents" ( Soc. Prom. Eng. Educ. Bull., v. 8, 1918); Nichols, H. W., "Theory of Variable Dynamical-Electrical Systems," Physical Review (v. 10, Aug. 1917); id., " The Audion as a Circuit Element," ibid. (v. 13, June 1919); Osborne, H. S., "The Design of Transpositions for Parallel Power and Telephone Circuits," Trans. Am. Inst. Elec. Eng. (p. 897, 1918); Rhodes, F. L., "The Wiring of Large Buildings for Telephone Service," ibid. (p. 1367, 1912); Slaughter, N. H., "The Production of Vacuum Tubes for Military Purposes," Physical Review (v. 14, Nov. 1919); Van der Bijl, H.J., ."Electron Relays as Amplifiers and Oscillators" ( Pop. Sci. Monthly, April, May and June 1920); Warren, H. S., "Inductive Effects of Alternating Current Railroads on Communication Circuits," Trans. Am. Inst. Elec. Eng. (p. 503, 1918);. Watson, T. A., "How Bell Invented the Telephone," ibid. (p. lox 1, 1915); Wente, E. C., "A Condenser Transmitter as a Uniformly Sensitive Instrument for the Absolute Measurement of Sound Intensity," Physical Review (v. To, July 1917).