A WHITE SOLDIER, at the camp of the Fifteenth regiment of colored troops, in Nashville, Tenn., while deprecating the employment of negroes as soldiers, boasted that he could make the grand rounds on the colored boys, and capture a musket or bayonet. Accordingly, he approached a sable guard, drew him into conversation, and kindly requested to see his musket, which the guard refused. then wished to look at his bayonet, but the guard, stood on his orders. He then tried intimidation, and, pretending to be insulted, aud a fighting attitude; but the guard ordered him to retire or he would shoot. The foolish fellow advanced, and was promptly shot, and the loss of an arm was the penalty of his imprudence.