A Canadian came from Fort Laramie, and brought a curious piece of intelligence. A trapper, fresh from the mountains, had become enamored of a Missouri damsel belonging to a family who with other emigrants had been for some days encamped in the neighborhood of the fort. If bravery be the most potent charm to win the favor of the fair, then no wooer could be more irresistible than a Rocky Mountain trapper. In the present instance, the suit was not urged in vain. The lovers concerted a scheme, which they proceeded to carry into effect with all possible dispatch. The emigrant party left the fort, and on the next succeeding night but one encamp............