Next morning Carson and Hobbs took up O'Neil's tracks and the buffalo's, and after hunting an hour or so found the Irishman's rifle, though he had little use for it afterward, as he preferred to cook and help around camp rather than expose his precious life fighting buffaloes. A great herd of buffaloes on the plains in the early days, when one could approach near enough without disturbing it to quietly watch its organization and the apparent discipline which its leaders seemed to exact, was a very curious sight. Among the striking features of the spectacle was the apparently uniform manner in which the immense mass of shaggy animals moved; there was constancy of action indicating a degree of intelligence to be found only in the most intelligent of the brute creation. Frequently the single herd was broken up into many smaller ones, that travelled relatively close together, each led by an independent master. Perhaps a few rods only marked the dividing-line between them, but it was always unmistakably plain, and each moved synchronously in the direction in which all were going. The leadership of a herd was attained only by hard struggles for the place; once reached, however, the victor was immediately recognized, and kept his authority until some new aspirant overcame him, or he became superannuated and was driven out of the herd to meet his inevitable fate, a prey to those ghouls of the desert, the gray wolves. In the event of a stampede, every animal of the separate, yet consolidated, herds rushed off together, as if they had all gone mad at once; for the buffalo, like the Texas steer, mule, or domestic horse, stampedes on the slightest provocation; frequently without any assignable cause. The simplest affair, sometimes, will start the whole herd; a prairie-dog barking at the entrance to his burrow, a shadow of one of themselves or that of a passing cloud, is sufficient to make them run for miles as if a real and dangerous enemy were at their heels.