The results have been astounding. Destruction of steam-joints by fatty acids from valve-lubricants is now an unknown thing. Not only this, but as a lubricant the Perfection Valve-Oil has proved itself so much superior that, where valve-seats required facing on an average once in sixty days, they do not now require facing on an average once in two years. The steam-pressure carried upon the boilers at that time rarely exceeded one-hundred-and-twenty pounds. With the increase of pressure and the corresponding increase of temperature it was found next to impossible to properly lubricate the valves and cylinders to prevent cutting. The superintendent-of-machinery of a leading American railway sent for Mr. Sibley at one time, told him that he proposed to build passenger-locomotives carrying one-hundred-and-eighty pounds pressure and asked if he would undertake to lubricate the valves and cylinders under that pressure. The reply was: “Go ahead. We will guarantee perfect lubrication to a pressure very much higher than that.” And to-day the higher type of passenger-locomotives carry one-hundred-and-eighty pounds pressure regularly. When it was clearly demonstrated that the Perfection Valve-Oil was a success, oil-men who had pronounced it impossible and had been backed in their opinion by noted chemists commenced to make oils similar to it in appearance. While many of them may have much confidence in their own product, the highest testimonial ever paid to Perfection Valve-Oil is that no competitor claims he has its superior. Some urge their product with the assurance that it is the equal of Perfection Valve-Oil, thus unconsciously paying the highest tribute possible to the latter. The works also make Perfection Signal-Oil for use in railway-lamps and lanterns. Since 1869 this oil has been before the public. It is in daily use in more than three-fourths of the railway-lanterns of the United States and it is the proud boast of Mr. Sibley that, during that time, there has never occurred an accident which has cost either a human limb or life or the destruction of one penny’s worth of property, through the failure of this oil to perform its work perfectly. Making but the two products, Valve and Signal-Oils, catering to no other than railroad-trade, studying carefully the demands of the service, keeping in touch with the latest developments of locomotive-engineering and thoroughly acquainted with the properties of all petroleum in Pennsylvania, the company may well believe that, granted the possession of equal natural abilities with competitors, under the circumstances it is entitled to lead all others in the production of these two grades of oils for railroad-use. [Illustration: CHARLES MILLER. JOSEPH C. SIBLEY. ]