| Show PURE FURE TUNNEL Am Alit Sc Secured urel fly thoU i of Compressor Cylinders on the tho Thu Tho entire railway wm will probably ably profit n recent made In connection with the tho smoke In tun tunnels nets nels The scene or of this the experiments was a long tunnel not tar far from Genoa through which some flome 00 trains pass a aday day leaving nn an amount of at smoke Two methods were tried First compressed air WIllS was used Large Luro cylinders ders ot of steel were with air and compressed to 70 pounds to the square Inch These e placed in hi the tender of DC the locomotive In hI through h the tunnel the Iho air was WIS allowed to N es escape cape The pure puro air blow back the smoke and purified the tho atmosphere l he second method Was with compressed ox oxygen oxygen This was allowed tp to escape through the Iho cylinders clInder Into the fires ot of the engines causing complete combus combustion tion and preventing the tho formation of at dangerous gases aliOS as well ell as making the theaIr theair aIr purer by the tho addition ot of the tho ox oxy oxygen gen The compressed air method t Is to tobe tobe be adopted as It is cheaper and almost almot as good as the oxygen |