Fig. 87. BAIN'S ELECTRO-CHEMICAL TELEGRAPH. 



THE ELECTRIC TELEGRAPH. 



CHAPTER XI. 



230. Illustration of the efficiency of the needle instruments. 231. Rate 

 of transmission with the French state telegraphs. 232. With the 

 French railway telegraphs. 233. With the Morse telegraph. 234. 

 Discrepancy of reports. 235. Causes of its celerity. 236. Rate with 

 Bain's telegraph. 237. Transmission of music. 238. Rate of 

 transmission with House's telegraph. 239. Distance sometimes affects 

 celerity. 240. Examples of distant transmissions in U. S. 241. 

 Advantages of uniform organisation. 242. Uses of the electric tele- 

 graph. 243. Subject of dispatches. 244. Effect of the tariff. 

 245. Uses of the telegraph in railway business. 246. Portable 

 railway telegraph. 247. Practical uses on railways. 248. Its econo- 

 mical advantages. 



230. Mr. Walker, writing in 1850, gives the following illustra- 

 tion of the efficiency which has been attained in the working of the 

 needle system, and in the management generally of the telegraphic 

 business : 



" The rate at which newspaper dispatches are transmitted from 

 Dover to London, is a good illustration of the perfect state to 

 which the needle telegraph has attained, and of the apt manipu- 

 lation of the officers in charge. The mail, which leaves Paris 



LABORER'S MUSEUM OF SCIBITCE. F 65 



No. 47. 



