THREE:("Great Jehosephat, what work writing to a young lady is. I'd much ruther build breastworks or make roads. Now, if it was some ordinary woman, I wouldn't have to be careful about my spelin' and gramer, but with sich a lady as Maria Klegg��great Cesar's ghost! a man must do the very best that's in him, and then that ain't half enough. But I must hurry and finish this letter this afternoon. I can't git another day off to work at it.") THREE:The eager boys had already begun firing, entering into the spirit of the thing with the zest of a Fame of town-ball. Shorty took Gid Mackall and Harry Joslyn down to the cover of some large stones, behind which they could lie and command the approach to the other end of the bridge with their rifles. Si took the other boys and placed them behind rocks and stumps along the crest and instructed them to fire with as good aim as possible at the flashes from the other side. In a minute or two he had a fine skirmish-line in operation, with the boys firing as deliberately and accurately as veterans. The engineer had backed the train under the cover of the cut, and presently he and the conductor came up with guns and joined the firing-line. THREE:The Captains were galloping ahead to point out the way. The Sergeants were alongside, seconding the whips of the drivers with strokes of the flats of their sabers on the animals' hanches. The six horses to each gun were galloping like mad, snatching the heavy piece over gullies, bumps, logs, and rocks as if it were a straw. The gunners had abandoned their usual calm pose with folded arms on the limber chests, and were maintaining their seats only by a desperate clutch on the side-irons.