four o'clock
But if we should n't , I wo n't care for amethysts or pearls . If I do n't see you again it 'll be because I 'm beyond the need of those things . '' There were handshakes and cheering , good wishes , and the relief section was off . `` Elmer , '' said Alan , after the two had been trailing through the trees Indian fashion some time , `` it is daylight at four o'clock and dark at seven -- that 's fifteen hours . Can you walk two miles an hour ? '' `` Sho ` ly , '' smiled Elmer , showing his white teeth . `` Well , that 's thirty miles a day .