The oxen went slower and slower, notwithstanding every effort of Uncle Stephen to make them move at their usual pace.  At last they came to a stand-still.  Mike and Quambo, who at the time were ahead, endeavoured in vain to induce them to move on.  Uncle Mark and I ran forward to assist them.  As I was about to do so I caught sight of a ruddy spot in the distance, away somewhat to the left.  That must be a fire, I thought, and I pointed it out to Uncle Mark.