There was a fine grassy level about a hundred yards from the railroad, on the opposite side from the settlement. It was skirted by a clear but sluggish stream, fringed by a slender growth of cottonwood-trees, and was so evidently the very place for a camp that Mr. Hobart selected it at once. Here the young engineers worked like beavers all through that long, hot afternoon, and by nightfall they had pitched twenty wall-tents, arranged in the form of an open square. One of these was reserved for Mr. Hobart, while Mr. Brackett and the leveller were given another, and two more were allowed to the other members of the party. Into these they had removed all their personal belongings, while in two other tents, carefully ditched and banked to keep out the water in case of rain, were stored all the instruments, implements, blank-books, and stationery provided for the expedition.