I was glad to find that the Indians were directing their course to the north-west of the camp, towards a plain on which, the scouts had brought word, buffalo had been seen feeding the previous evening, and it was supposed that they were not yet likely to have got far off.  When we reached the ground, however, it was found that they had gone away further to the northward, so chase was immediately made after them.  The herd must have gone on at a somewhat rapid rate, for we forded several streams, and entered on a part of the prairie across which, after riding a few miles, we could see nothing but the waving grass on every side.