August 25.–This evening, Mr. William S. Johnston, a nephew of the rebel general of that name, and grandson of Mrs. Henry Gilpin, of Philadelphia, was arrested in that city as he was about leaving for the South. Mr. Johnston made no resistance whatever, and was taken to the Central station, accompanied by some friends, among whom was Townsend Ward, of Philadelphia. A strict examination of his effects was made by the District Attorney. In his trunk was found a large number of papers addressed to prominent Southern citizens, and a map of the seat of war in Virginia. His commission, however, was not discovered. After his examination, Mr. Johnston bade farewell to his friends, and was conveyed to Moyamensing prison in charge of the officers.–N. Y. Commercial, August 26.
–All the large craft, schooners, and sloops, and small rowboats and skiffs on the Potomac River, were seized by the Government authorities.–N. Y. Herald, August 27.
–A Union man named Moore was killed, and another named Neill mortally wounded, this afternoon, by a gang of five secessionists, at Shotwell Toll-gate, Ky., seven miles from Covington. Both men were stabbed in the back. A party of Unionists gave pursuit to the murderers, who fled toward the Tennessee line.– N. Y. Times, August 27.
–”Wm. Halsey, hailing from Ithaca, N. Y., was waited upon by a party of citizens at his hotel, in Scranton, Pa., and requested to leave town in three hours, or accept the alternative of riding out on a rail. He had given provocation beyond endurance, by endeavoring to induce parties to take the New York Day Book, and by uttering the rankest treason. He left precipitately.–N. Y. Times, August 27.
–William B. Taylor, the Postmaster of New York, received orders from “Washington that no more copies of the Journal of Commerce, the News, the Freeman’s Journal, or the Brooklyn Eagle, should be sent through the mails.–N. Y. Times, August 26.
–Egbert L. Viele, late Captain of the Engineer corps of the Seventh regiment, received his commission as Brigadier-General in the regular army. General Viele is a graduate of West Point, and served through the Mexican war, but of late years has been engaged in civil life as an engineer.–N. Y. Commercial, Aug. 26.