three o'clock
But he did not contradict my statement , and that was all the evidence I needed to prove that I was right in what I said . The tracks here on the bank are not as fresh as you suppose . If they were wet , it would be a sign that the Indians crossed the ford since three o'clock this afternoon . '' `` Why since three o'clock ? '' asked Bob . `` Because the sun went under a cloud at that hour , and has n't showed himself since to dry off the water that the horses and cattle brought out of the stream on their feet and legs . '' While the two boys were talking in this way George was getting ready to go to bed .