6485 



Telephony 



6485 



Communication between Paris and Eheims. 

 La Touanne, G. de. A. Tel. 13 (1886) 5-. 



railway stations and moving trains. 

 Germain, P. C. E. 106 (1888) 1226-. 



ships. Blake, L. I. Bailroad & Eng. J. 



61 (1887) 470-. 



with single wire. Marinowitch, B, Lum. 

 Elect. 10 (*1883) 556-. 



Commutator, Mandroux, for secret telephonic 



conversations. Pomey, J. B. A. Tel. 21 



(1894) 220-. 

 Condensers, use. Boudet de Paris, M. As. Fr. 



C. E. 12 (1883) 322-. 

 , to increase distance of action. Cros, C, 



C. E. 103 (1886) 1006-. 

 Construction of telephones. Steioart, J. E. 



Sc. Abs. 3 (1900) 839. 

 Contact force of metals used to work telephones. 



Pierard, E. [1900] Sc. Abs. 3 (1900) 454-, 



774; 4(1901) 150. 

 Current, minimum, audible in telephone. 



Rayleigh, (Lord). Ph. Mg. 38 (1894) 285-. 

 Currents, action on galvanometer. Chardonnet, 



E. de. C. E. 94 (1882) 857. 

 , energy. Pellat, H. Par. S. Phlm. fill. 5 



(1881) 94-. 

 , , and condenser discharge. Pellat, H. 



Par. S. Ps. Se. (1881) 143-. 



and extra currents, strength. Ferraris, G. 

 Tor. Ac. Sc. At. 13 (1877) 980-. 



-, method of reinforcing. Moser, J. G. E. 



96 (1883) 433-. 

 , translating. Hissink, A. C. Batav. 



Ntk. Ts. 43 (1884) 19-. 

 , strength, influence of strength of magnet. 



Cross, C. R., & Williams, A. S. Am. Ac. 



P. 24 (1889) 113-. 

 , , measurement. Cross, C. R., <& Page, J. 



Am. Ac. P. 21 (1886) 248-. 

 , required for working. Tait, P. G. 



Edinb. E. S. P. 9 (1878) 551-. 

 , strengthening by induction-coil. Onnen, H. 



Batav. Ntk. Ts. 47 (1887) 276-. 

 Cushman the inventor. Barney, W. C. Tel. 



J. 23 (1888) 358-. 

 Cut-off, automatic. Oesterreich, W. Elekt- 



tech. Z. 8 (1887) 194-. 

 Diaphragm, amplitude of vibration. Sirks, 



J. L. (xn) Mbl. Nt. 8 (1878) 88-. 

 , . Boudet de Paris, . Lum. 



Elect. 1 (*1879) 136-. 

 , . Salet, G. C. E. 95 (1882) 



178-. 



_, . Franke, A. Elekttech. Z. 11 



1890) 288-. 

 , . Cross, C. R., <& Mansfield, A. N. 



Am. Ac. P. 28 (1893) 93-. 

 , . Cros*, C. R., & Phillips, H. M. 



Am. Ac. P. 28 (1893) 234-. 

 , . Barus, C. Am. J. Sc. 3 (1897) 



219-. 

 , . Cauro, J. Par. S. Ps. Se. (1899) 



117-. 

 , elastic and magnetic theory. Mercadier, E. 



C. E. 101 (1885) 744-. 

 , sensitiveness, method of increasing. De- 



charme, C. C. E. 88 (1879) 1132-. 



Distance, limits. Preece, W. H. B. S. P. 42 



(1887) 152-. 

 , . Wietlisbach, V. Cztg. Opt. 10 (1889) 



115-. 

 Disturbances, causes. Gai/e, A. C. E. 92 



(1881) 790- ; Les Mondes 54 (1881) 504- ; 



55 (1881) 3. 

 Dolbear's researches. Houston, E. J. Franklin 



I. J. 119 (1884) 40-. 

 Drawbaugh's inventions. Houston, E. J. 



Franklin I. J. 119 (1885) 320-, 410-. 

 Duplex telephony. Canter, 0. Elekttech. Z. 



8 (1887) 442-, 546-; 10 (1889) 20. 



. Rosebrugh, . Cn. I. P. 5 (1888) 106-. 



, Barrett's system. Anon. [1886] Elect. 



18 (1887) 18-. 



, Canter's system. Mauritius, E. Elekt- 

 tech. Z. 10 (1889) 19-. 



, Gattino's system. Canter, O. Elekt- 

 tech. Z. 8 (1887) 369-. 

 , . Petsch, R. Elekttech. Z. 10 



(1889) 490-. 

 , history. Wiesner, K. Elekttech. Z. 8 



(1887) 291-. 

 Edison's inventions. Houston, E. J. Franklin 



I. J. 119 (1885) 122-. 

 Efficiency. Dussaud, . C. B. 129 (1899) 



880-. 



of induction-coil. Pierard, E. [1894] A. 

 Tel. 22 (1895) 79-. 



, means of increasing. Elsasser, C. Elekt- 

 tech. Z. 6 (1885) 283-. 



Electrophone, Maiche's. Geraldy, F. Lum. 

 Elect. 2 (*1880) 153-. 



Exchange, connection of several stations with, 

 by means of same wire. Elsasser, C. Elekt- 

 tech. Z. 7 (1886) 80-. 



, Lyons. Maureau, . A. Tel. 23 (1896- 

 97) 489-. 



, Zurich. Wietlisbach, V. J. Tel. 18 (1894) 

 181-, 205-, 229-, 253-. 



Exchanges, apparatus for. La Touanne, G. de. 

 A. Tel. 17 (1890) 401-, 508- ; 18 (1891) 121-. 



, commutator for. Du Moncel, T. A. L, 

 Lum. Elect. 3 (*1881) 225-. 



__, . Mandroux, . A. Tel. 18 (1891) 



220-, 312-. 



and their working. Sinclair, D. [1896] I. 

 Elect. E. J. 25 (1897) 300-, 350-. 



EXPERIMENTS. 



Lachinov, D. A. [1877] (xn) Es. C. Ps. 8. J. 



10 (Ps.) (1878) [(Pt. 1)]14-. 

 Blyth, J. Edinb. E. S. P. 9 (1878) 553-. 

 M'Kendrick, J. G. Edinb. E. S. P. 9 (1878) 



558-. 



Rossetti, F. Yen. I. At. 4 (1877-78) 567-. 

 Sacher, E. Wien Az. 15 (1878) 1-. 

 Serpieri, A. Mil. I. Lomb. Ed. 11 (1878) 194-. 

 Zetzsche, K. E. [1878] J. Tel. 4 (1878-80) 



Blyth, J. [1879] Edinb. B. S. P. 10 (1880) 



45-. 

 Treve, (capit.) A. R. S. Les Mondes 56 (1881) 



Fuehs~'l\ Z. Instk. 4 (1884) 410-. 



867 



