We were close to the reeds, and could listen to the strange sounds which are often heard there. By day I had seen water-snakes putting up their heads and swimming about. There were great numbers of otters ('Lutra inunguis', F. Cuvier), which have made little spoors all over the plains in search of the fishes, among the tall grass of these flooded prairies; curious birds, too, jerked and wriggled among these reedy masses, and we heard human-like voices and unearthly sounds, with splash, guggle, jupp, as if rare fun were going on in their uncouth haunts. At one time something came near us, making a splashing like that of a canoe or hippopotamus; thinking it to be the Makololo, we got up, listened, and shouted; then discharged a gun several times; but the noise continued without intermission for an hour. After a damp, cold night we set to, early in the morning, at our work of exploring again, but left the pontoon in order to lighten our labor. The ant-hills are here very high, some thirty feet, and of a base so broad that trees grow on them; while the lands, annually flooded, bear nothing but grass. From one of these ant-hills we discovered an inlet to the Chobe; and, having gone back for the pontoon, we launched ourselves on a deep river, here from eighty to one hundred yards wide. I gave my companion strict injunctions to stick by the pontoon in case a hippopotamus should look at us; nor was this caution unnecessary, for one came up at our side and made a desperate plunge off. We had passed over him. The wave he made caused the pontoon to glide quickly away from him. We paddled on from midday till sunset. There was nothing but a wall of reed on each bank, and we saw every prospect of spending a supperless night in our float; but just as the short twilight of these parts was commencing, we perceived on the north bank the village of Moremi, one of the Makololo, whose acquaintance I had made on our former visit, and who was now located on the island Mahonta (lat. 17d 58' S., long. 24d 6' E.). The villagers looked as we may suppose people do who see a ghost, and in their figurative way of speaking said, "He has dropped among us from the clouds, yet came riding on the back of a hippopotamus! We Makololo thought no one could cross the Chobe without our knowledge, but here he drops among us like a bird."