! Rloib Lieutenant Captured by American i Holdlers.A telegram ban been received by Gen Terry j ; at l'ort bnolliug from the commanding officer ! of Fort AaTmaboiue confirming tbe report of ! the capture of Gabriel Dumont on American : i soil. south of tin-international boundary hue, ] 1 ami iiia arrival at Fort Aesinaboine. It aj- | | pear? that on tho morning of the 27tli insi., j while a small Bcoutin^ party, consisting of Scr- 1 ! grant Perkins, of the L.ghtoenth infantry, and i I lwoonliBted men, wore scouting ou tho Miik 1 liver trail about ten miles from Fort Aesiu- , i uboinc. two men were observed traveling to- * ward tho fort They were overhauled ; and, j upon the representation of one of them that j , he waa Gabriel Dumont, Kiel's lieutenant, both *lt; re arrested and taken under escort to the , fort, where tlmy wore tnruod over to tho commanding officer. A careful examination was | made by CoL Coppinger, which established bo von 1 n doubt the identity of Dumont himself, i iiis companion proved to be a half-breed nam 1 oil Michael Dnmais. They w«re at once placed ! in custody, and a dispatch was sent to Gen. Ter-i ryghingmformation of the arrest, andaskicg for instructions. Tc reply to the request the j general directed that the men bo detained at j the fort until further orders. The matter Lae been comnninjrat d to the headquarters., Dumont was Kiel's first lieu tenant and the .acting military director of tho half-breed foicee 1 in Uie rebellion just closing. After the battle of B a tool i e he refused to follow Kiel's example and surrondor, but escaped, and until ; now his whereabouts had been unknown. Dumont has been described at one of the ( bravest of men, fearless and resolute in every i : undertaking, and the beau ideal of a horseman. He is five feet ten inches in height, a I splendid specimen of rugged manhood, and j one of the moat extorts shots. Ho has invari- j I ably been aolectea as leader ou the buffalo , j hunts. Ho has been married to a half-breed j for many years, and has earned a competence.