en s.;hed is that none of lln- inventors could rid llicm.*ilve* <>' tho idea of gas-lighting, nnd that, all haw adhered to the system of prmliicing the Klcc- tricity m some cc tral jilnec, or by large machinery, instead of (ir.-t l.ijirg down tlio principle 'that v Lain]) which should ever lio- come generally useful and popular must be portable, like an Oil Lamp, and contain the , generator of Electricity m itself, i.e., m the foot of tho Lamp. Tho Norman Electric Light Co. has at last auceeeded m completely realising this ideal of , Electric Lighting, and there is no doubt that this most important inrentiuii will bring about a complete revolution m all branches of J lighting. Our Electric Lamp heeds neither Ma- chinery, Conductors, nor any expensive out- lay, and is neither complicated nor disagree- able m manipulation ; all that is neces- sary is to refill it every four or live days ' with acid. The cost of lighting will bo 83 cheap as gas (3i cents per hour), and it has before the latter the mi- ( niense advantage of neither producing heat, smoke nor carbonic acid, owing to which the air is not impured, and remains at the same degree of temperature. It is, further, abso- lutely inodorous, and docs not need to be kir.dled by match or otherwise, but simply by turning the key, thus avoiding all danger of lire, explosion or suffocation, as m the case of gas, if the key is left open ; and it must be conceded that this 'advantage alone is in- valuable. It is further profcrublo to any known kind of lighting for tho following reasons : — 1. Its manipulation is fo simple that any child can keep it m order. 2. lhat the Lamp is portable, and can be removed like any Cil Lamp from one place to another. 3. That it neither requires the disagreeable fixing of the wick or the cleaning of the cylinder, as m the case of Oil Lamps " 4. That the light produced is a soft and most steady one j that it never llickers, and tho flame, though being equal m power of lighting to gas, can be regulated to any degree. 5. 