Show D in lighting 97 pr coot cent of the electric current goes uw to I 1 he adamen hot leaving leafing but 2 per coot cent for illumination and this brings bringa us to a boond long advantage of the vacuum tube it never grows hot you ton may touch the glass claw any hour after the light in ia turned on and find it as cool as aa when first lighted an aa electric bulb IQ in like case IB a hot enough to scorch not to mention giving headaches to the luckless luc kleia mortals who happen to sit eit d directly underneath or beside it the tubes can be attached to the electric light fixtures in ID common us but cannot be illumined by the ordinary current or rather they can be made to glow with it but the process is ia too costly that was waa one thing that made the wise men doubtful in tho the beginning A few of them thought testa might probably perfect his light process but were firm in the belief that it would remain too costly for commercial use denlas new dynamo ham baa changed all that contracts now signed insure that several important structures in now new york city will be equipped with the now new light there can be no doubt that thai it will rapidly supplant aup plant other methods of illumination as aa soon as i moneyed men mea build and operate high frequency current stations the ir first cost coat of wires tubes etc is ia about the sanse aane as aa for lighting bat the tubes have bate the very great virtue of not burniac out after the manner of incandescent globes or carbon pencils hence the cost of operation will be very tory much less leaa when it cornea comes to use UM there is a simply imply no comparison possible poa aible it is just junt the same bame an aa having banog a day twenty four hours houra long everywhere for ovary every purpose ae artificial daylight equals the real thing nothing remains now but bat to equip the world with proper wiron dynamos anti and so ao on men with money know a good thing when they see aea it even etea without artificial daylight so ao it in very likely that in a matter of twelve mouth month there will be practically all no igat in may any considerable city of the world af M |