InDej. 245 



Multiple transmission, musical, 120. 

 Musical message receivers, 125, 139. 

 Musical tones 1 ran-mit ted, !1, 92, 120, 136. 

 Muschenbroeck, Prof., and the Leyden jar, 8. 



N'ewton. Sir Isaac, electrician, 8. 



Niagara Fall- Power, I hs. XXII to XXVIII, 186 



to 233. 



Introduction rock, water, power, 186. 

 Appliances: 



tunnel, power-house, 190. 



shaft, dynamos, 192. 



current, in:}. 



governor, 194. 



water-head, 195. 



crane, !!><;. 



circuit-breaker, 199. 



transformer, 200. 



electromotive force, 204. 

 Electrical Products Carborundum, 209. 



materials, 210. 



furnaces, 211. 



electric current, 213. 



horse-power, 214. 



method of work, 215. 

 Bleaching-powder, 218. 



chlorine and sodium, 219. 



method of work, 220. 



caustic soda, 221. 

 Aluminum. i:i. 



crucible- and methods, 224. 



inauiK-ti 

 Calcium carbide. I 



process, : 



acetylene gas, 230. 

 Other products, 232. 



