When I look back only twenty-five years, and recall the fact that they roamed in immense numbers even then, as far east as Fort Harker, in Central Kansas, a little more than two hundred miles from the Missouri River, I ask myself, "Have they all disappeared?" An idea may be formed of how many buffalo were killed from 1868 to 1881, a period of only thirteen years, during which time they were indiscriminately slaughtered for their hides. In Kansas alone there was paid out, between the dates specified, two million five hundred thousand dollars for their bones gathered on the prairies, to be utilized by the various carbon works of the country, principally in St. Louis. It required about one hundred carcasses to make one ton of bones, the price paid averaging eight dollars a ton; so the above-quoted enormous sum represented the skeletons of over thirty-one millions of buffalo.[42] These figures may appear preposterous to readers not familiar with the great plains a third of a century ago; but to those who have seen the prairie black from horizon to horizon with the shaggy monsters, they are not so. In the autumn of 1868 I rode with Generals Sheridan, Custer, Sully, and others, for three consecutive days, through one continuous herd, which must have contained millions. In the spring of 1869 the train on the Kansas Pacific Railroad was delayed at a point between Forts Harker and Hays, from nine o'clock in the morning until five in the afternoon, in consequence of the passage of an immense herd of buffalo across the track. On each side of us, and to the west as far as we could see, our vision was only limited by the extended horizon of the flat prairie, and the whole vast area was black with the surging mass of affrighted buffaloes as they rushed onward to the south.