"However, they are a good three miles behind, and it will be dark in another half hour.

As soon as it is so, we will turn off to the right or left, and so throw them off our track.

Don't hurry your horse.

The animals have made a very long journey, since we started, and we shall want them badly tomorrow." In another half hour the sun went down.

Darkness comes on quickly in the Soudan, and in another quarter of an hour they had lost sight of their pursuers, who had gained about a mile upon them.
"Another five minutes, Zaki, to allow for their eyes being better than ours.