Consternation seized upon the people, and well it might, for when the full import of the disturbances was known, it was only then ascertained that a great cataclysm had befallen the nation. Without going too much into details, for you can later on gain a full knowledge of this great physical disturbance from the books published soon after its occurrence, I will explain but a few of the facts causing it. You are aware, Mr. Cobb, to what extent natural gas was used in the United States in 1887; that there were thousands of wells pouring out millions of cubic feet daily; that many of them showed pressure of from ten to twenty atmospheres. From the time you left the world, as it were, until August, 1916, gas wells were being sunk all over the country drained by the Ohio and its tributaries. Their number was way up in the thousands. Billions of cubic feet of natural gas were being consumed or flowing to waste daily. Pittsburgh alone used 300,000,000 cubic feet a day in its vast manufactories. The earth in the Ohio basin was honey-combed with the gas pockets and strata, and gas veins were struck in which the gas was under such pressure that the flow could not be checked by human hands. It was 14 dial, as I have said, on the last day of August, 1916, and the workmen in the large foundry of Dillenback & Co., at Lakeside, on the Ohio, some fifty miles below Pittsburgh, were tapping a huge melting of aluminum bronze for the purpose of casting the outer shell of one of the latest model guns of that period. But let me first describe the interior arrangements of the foundry, that you may fully grasp the situation as it then stood, and the cause of the results which followed. Natural gas was, and had been for a long time, the fuel used in these works. Up to 1914 the gas boring of Lakeside had furnished all the gas required. This well was of ten-inch bore, and reached a depth of 4,737 feet, but in the year mentioned the well had failed to furnish gas at any pressure. The standard pipe had been moved and an iron plate set over the mouth of the tube, on a level with the floor. Five hundred feet from this well a boring to 4,016 feet had struck a new stratum, giving vast quantities of gas at a pressure of five atmospheres. To revert back: Just as the tapping of the furnaces was made, the steam boiler of the crane engine, through some unaccountable cause, burst. The concussion shook the buildings, tore up the ground, displaced the iron plate over the disused gas well, and broke the aluminum furnaces, letting over one hundred tons of molten metal flow rapidly across the foundry floor. Recovering from the first shock and fright of the explosion, all efforts were at once made to arrest the flow of the liquid stream, or to divert its course away from the old well. That well, as all knew, still contained gas intermingled with common air, the mixture being of a very explosive nature. All perceived at a glance what would be