We intercepted the North Fork again during the afternoon, watering from it for the last time, and the next morning struck the Blue River, the expected tributary. Sponsilier maintained his position in the lead, but I was certain when we reached the source of the Blue, David would fall to the rear, as thenceforth there was neither trail nor trace, map nor compass. The year before, Forrest and I had been over the route to the Pine Ridge Agency, and one or the other of us must take the lead across a dry country between the present stream and tributaries of the Niobrara. The Blue possessed the attributes of a river in name only, and the third day up it, Sponsilier crossed the tributary to allow either Forrest or myself to take the lead. Quince professed a remarkable ignorance and faulty memory as to the topography of the country between the Blue and Niobrara, and threw bouquets at me regarding my ability always to find water. It is true that I had gone and returned across this arid belt the year before, but on the back trip it was late in the fall, and we were making forty miles a day with nothing but a wagon and remuda, water being the least of my troubles. But a compromise was effected whereby we would both ride out the country anew, leaving the herds to lie over on the head waters of the Blue River. There were several shallow lakes in the intervening country, and on finding the first one sufficient to our needs, the herds were brought up, and we scouted again in advance. The abundance of antelope was accepted as an assurance of water, and on recognizing certain landmarks, I agreed to take the lead thereafter, and we turned back. The seventh day out from the Blue, the Box Buttes were sighted, at the foot of which ran a creek by the same name, and an affluent of the Niobrara. Contrary to expectations, water was even more plentiful than the year before, and we grazed nearly the entire distance. The antelope were unusually tame; with six-shooters we killed quite a number by flagging, or using a gentle horse for a blind, driving the animal forward with the bridle reins, tacking frequently, and allowing him to graze up within pistol range.