It is probably owing to the greater dryness of the African atmosphere that sunstroke is so rarely met with.

In twenty-two years Dr.Livingstone never met or heard of a single case, though the protective head-dresses of India are rarely seen.
When the water is nearly at its lowest, we occasionally meet with small rapids which are probably not in existence during the rest of the year.
Having slept opposite the rivulet Bume, which comes from the south, we passed the island of Nakansalo, and went down the rapids of the same name on the 17th, and came on the morning of the 19th to the more serious ones of Nakabele, at the entrance to Kariba.

The Makololo guided the canoes admirably through the opening in the dyke.

When we entered the gorge we came on upwards of thirty hippopotami: a bank near the entrance stretches two-thirds across the narrowed river, and in the still place behind it they were swimming about.

Several were in the channel, and our canoe-men were afraid to venture down among them, because, as they affirm, there is commonly an ill-natured one in a herd, which takes a malignant pleasure in upsetting canoes.