BOATS BURNED.– On Saturday morning last, the 9th inst., about 3 o’clock, the cry of fire was raised through our town, when it was discovered that three boats, the “Adam Sherman” and “Arthur Cropley,” belonging to Mr. Oliver Sherman, and the “C. W. Harper,” belonging to Mr. Lawson W. Poffenberger, lying in the C. & O. Canal, at Bridgeport, opposite this town, were in in flames. The Potomac Fire Company of this town, and a number of other citizens, were soon on the spot, and extinguished the flames, but not until the boats were nearly destroyed. It is said that Mr. Sherman’s loss is about one thousand dollars, and the loss to Mr. Poffenberger is about five hundred dollars. The fire was the result of an incendiary, and Mr. S., as will be seen by an advertisement in this issue, offers a reward of $500 for any information that will lead to the conviction of the party or parties who set fire to the boats. We also learn that the boat “H. C. Windship,” belonging to Mr. George Dixon, lying in the Canal, near the Ore Bank, near Harper’s Ferry, was set on fire and burned on the same morning. The boat “Horace Hessley,” was also set on fire and burned, on Monday night last, at Mercersville.