clear about the serics of agreements guaranteeing Germany’s western frontiers and her Work. WALTER SHERMAN GIFFORD, A.B. President American Telephone and Telegraph Conductors op I. G. Hill, Telephonitc Transmission (1920). Cl Ries) TELEPHOTOGRAPHY: sce pIlOTOTELEGRAPHY. Superposed Circuit A.C. at w=2, f= D.C. 1,250 3,000 5,000 7,000 12,500 Resistance (Standard ohms)| 19-9 20:1 20'4 20:8 21-4 23°9 10-0 IO-I 10:3 10:5 11-8 Capacity (Microfarads) "094 092 "092 ‘092 "092 “092 0:27 0:27 0:27 Inductance (Millihenries) 11-8 118 11-8 5°5 55 5'5 55 5'5 55 5'5 55 5'5 Leakance : (Microhms) o4 1-0 1-8 2-8 5:3 1-4 3-0 5'4 8-1 15:7 Attenuation Constant 024 -028 029 030 034 "030 -034 ‘036 ‘037 043 Characteristic Impedance 446 385 369