An Artificial Earthquake.—We present on this page, by the courtesy of the Indianapolis News, two other reproductions of photographs of the results of that fearful explosion, October 15, at the DuPont Powder Mills, Fontanet, Ind., by which the entire town was wrecked, sixty people killed, and many injured. Forty thousand kegs of gunpowder first exploded, and that was followed by the explosion of fifty tons of dynamite. The shock was felt at Cincinnati and Louisville and recorded by seismographs as an earthquake. The explosion sprang the walls of a schoolhouse at Rockville, twenty-three miles away, and threw the children into a panic; $10,000 worth of damage was done in the town of Brazil, twelve miles away; and in the city of Terre Haute $25,000 damage was done, seventeen miles away; and a corresponding amount in twenty-four surrounding towns, villages, and cities. Windows were broken in Danville sixty miles away.