Twenty-seven hundred and sixty miles in twenty-five days, meant a fast clip for horses and a lumbering Concord coach over ungraded roads. And such a clip necessitated frequent relays. Which, in their turn, demanded stations at short intervals. While a road gang was removing the ugliest barriers in the different mountain passes--which was all the smoothing away that highway ever got during the stage-coach era--a party went along the line erecting adobe houses. These houses were little forts, well suited for withstanding the attacks of hostile Indians. The corrals beside them were walled like ancient castle-yards. William Buckley of Watertown, New York, headed this party. Bands of mounted Comanches attacked them on the lonely Staked Plains of western Texas. Apaches crept upon them in the mountains of southwestern New Mexico. Of the battles which they fought history contains no record; but they went on driving the Mexican laborers to their toil under the hot sun, and the chain of low adobe buildings crept slowly westward. In those days Mexican outlaws were drifting into Arizona and New Mexico from Chihuahua and Sonora; and these cutthroats, to whom murder was a means of livelihood, were almost as great a menace as the Indians. Three of them got jobs on the station building gang and awaited an opportunity to make money after their bloody fashion. At Dragoon Springs they found their chance. Here, where the Dragoon Mountains come out into the plain like a lofty granite promontory that faces the sea, the party had completed the walls of a stone corral, within which enclosure a storehouse and stage station were partitioned off. The roofing of these two rooms and some ironwork on the gate remained to be completed. The main portion of the party moved on to the San Pedro River, leaving Silas St. Johns in charge of six men to attend to these details. The three Mexican bandits were members of this little detachment. The other three were Americans. The place was right on the road which Apache war-parties took to Sonora. For this reason a guard was maintained from sunset to sunrise. St. Johns always awoke at midnight to change the sentries. One starlight night when he had posted the picket who was to watch until dawn, St. Johns went back to his bed in the unroofed room that was to serve as station. He dropped off to sleep for an hour or so and was roused by a noise among the stock in the corral. The sound of blows and groans followed. St. Johns leaped from his blankets just as the three Mexicans rushed into the room. Two of them were armed with axes and the third with a sledge. The fight that followed lasted less than a minute.