PROCEEDINGS 
OF THE 
Cambnidge Philosophical Society. 
January 28, 1889, 
Mr J. W. CLARK, PRESIDENT, IN THE CHAIR. 
The following were elected Fellows of the Society: 
E. H. Douty, M.A., King’s College, 
H. W. Richmond, M.A., King’s College, 
G. F. C. Searle, B.A., Peterhouse. 
The following Communications were made: 
(1) The application of the theory of the Transmission of 
Alternating Currents along a wire to the Telephone. By J. J. 
THomson, M.A., F.R.S., Cavendish Professor of Experimental 
Physics, Cambridge. 
In a paper on “ Electrical Oscillations on Cylindrical Con- 
ductors,” Proc. Lond. Math. Soc., vol. 17, p. 320, I have shown 
that if we have an alternating current travelling longitudinally 
along a thin wire and varying as e(™+pP9 where the axis of the 
wire is taken as the axis of z, and if 
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