Index to Volume XVIII 



Affel, H. A., and B. W. Kendall, A Twelve-Channel Carrier Telephone System for 



Open-Wire Lines, page 119. 

 Altimeter: A Terrain Clearance Indicator, Lloyd Espenschied and R. C. Newhouse, 



page 222. 

 Amplifiers, Multi-Channel, Load Rating Theory for, B. D. Holbrook and J. T. Dixon, 



page 624. 

 Anderson, C. N., A Representation of the Sunspot Cycle, page 292. 

 Aykroyd, M. J. and D. G. Geiger, The Toronto-Barrie Toll Cable, page 588. 



B 



Bedell, W. B., G. B. Ransom and W. A. Stevens, Experience in Applying Carrier 

 Telephone Systems to Toll Cables, page 547. 



Beyer, J. W., J. T. O'Leary a?rd E. C. Blessing, An Improved Three-Channel Carrier 

 Telephone System, page 49. 



Blessing, E. C, J. T. O'Leary and J. W. Beyer, An Improved Three-Channel Carrier 

 Telephone System, page 49. 



Bowen, A. E., and F. B. Llewellyn, The Production of Ultra-High-Frequency Oscilla- 

 tions by Means of Diodes, page 280. 



Cable, Toll, The Toronto-Barrie, M. J. Aykroyd and D. G. Geiger, page 588. 

 Cables, Toll, Experience in Applying Carrier Telephone Systems to, W. B. Bedell, 



G. B. Ransom and W. A. Stevens, page 547. 

 Carrier System, Type "J," Some Applications of the, L. C. Starbird and J. D. Matins, 



page 338. 

 Carrier System, Twelve-Channel Open-Wire, Line Problems in the Development of 



the, L. M. Ilgenfrilz, R. N. Hunter and A. L. Whitman, page 363. 

 Carrier Telephone System, An Improved Three-Channel, /. T. O'Leary, E. C. Blessing 



and J. W. Beyer, page 49. 

 Carrier Telephone System, A Twelve-Channel, for Open- Wire Lines, B. W. Kendall 



and H. A. Affel, page 119. 

 Carrier Telephone Systems, Copper Oxide Modulators in, R. S. Caruthers, page 315. 

 Carrier Telephone Systems, Experience in Applying to Toll Cables, W. B. Bedell, 



G. B. Ransom- and W. A. Stevens, page 547. 

 Carson, John R., Frequency-Modulation: Theory of the Feedback Receiving Circuit, 



page 395. 

 Caruthers, R. S., Copper Oxide Modulators in Carrier Telephone Systems, page 315. 

 Ceramic Manufacturing Developments of the Western Electric Company, Some. 



A. G. Johnson and L. L Shaw, page 255. 

 Chaffee, J. G., The Application of Negative Feedback to Frequency-Modulation 



Systems, page 404. 

 Clarke, W. J., and J. R. Townsend, Plastic Materials in Telephone Use, page 482, 

 Clearance Indicator, A Terrain, Lloyd Espenschied and R. C. Newhouse, page 222. 

 Clutch, Dial, of the Spring Type, C. F. Wiebusch, page 724. 

 Contemporary Advances in Physics, XXXII. Particles of the Cosmic Rays, Karl 



K. Darrow, page 190. 

 Copper Oxide Modulators in Carrier Telephone Systems, R. S. Caruthers, page 315. 

 Cory, S. /., R. B. Shanck and F. A. Cowan, Recent Developments in the Measure- 

 ment of Telegraph Transmission, page 143. 

 Cosmic Rays, Particles of the. Contemporary Advances in Physics, XXXII, Karl 



K. Darrow, page 190. 

 Cowan, F. A., R. B. Shanck and S. I. Cory, Recent Developments in the Measurement 



of Telegraph Transmission, page 143. 



5 



