At noon to-day we saw Indian signs around a water hole; these signs consisted of pony tracks, unshod hoofs, and moccasin prints; they were presumed by our most most expert frontier men to be only a few hours old. Camped for the night at 8 p. m. Made 41 miles to-day. _August 6._--Left camp at 4 a. m. [After this day I did not note the precise hour of leaving camp in the morning, or of camping at night, because the jolting, or some other cause, had put my own watch out of order. Our hours, however, were much the same as they have been stated until passing the Tucson, west of which a large portion of the work was night service.--See Journal, Sept. 1st to 18th.] In carrying the mail we do not drive all the time from our morning start to the night camp. We stop four times during the day; twice for our two meals of breakfast and dinner; breakfast after the morning drive, dinner about 4 o’clock. We also stop once for a nooning, and once about sunset to graze the mules, at which hour they seem to feed best. We stopped half an hour to-day at Camp Hudson, situated at the second crossing of the San Pedro, or the Devil’s river; here I found the remnant of our coach, with the pole and ten spokes broken, the bars gone, the top all stripped, a bullet hole through the body from a gun, carbine, or some piece carrying a heavy ball, and fired by the Indians. Made 42 miles to-day. _August 7._--To-day we crossed the Llano Estacado at the narrowest part. By my schedule of distances you will perceive it is only thirty miles from Howard Springs to Live Oak creek, and only a portion of the distance can be properly called the _staked plain_; in fact this is about its southern termination. Camped about midnight. Made 52 miles to-day.