Of fish I observed five species, one of which, the South African silurus, with its flat smooth head, is found as far north as the other side of the Zambesi in fresh water as well asin the salt-pans and the salt rivers.
In the neighbourhood of Klipdrift I made an exchange which seemed to me advisable. I bartered four of my horses for a team of six oxen, and although I was a pecuniary loser by the transaction, I could not be otherwise than satisfied when the bargain was concluded, as the horse disease, which rages every year, had broken out in the district, and I had observed several carcasses bleaching in the sun. Had it not been for this disease, I could have obtained a far better price for my horses, but under the circumstances the owner of the oxen hesitated long before he would entertain the proposal for exchange at all. He assured me that I should find the whole six to be quiet and docile, and all that draught-oxen ought to be; however, I soon discovered that two of them were so wild as to be almost unmanageable. My change of team consequently involved me in engaging two additional black servants—one to lead the foremost of the three pairs, another to urge them on by the free use of the whip.
I had no difficulty in finding what I required. In the Koranna village, one of my companions had fallen in with a German, who had taken up his residence there, and I applied to him to inquire among the natives for a couple of strong young men, who would come up the country with me for a few weeks. In
