As we were the very first white men the inhabitants had ever seen, we were visited by prodigious numbers. Among the first who came to see us was a gentleman who appeared in a gaudy dressing-gown of printed calico. Many of the Makololo, besides, had garments of blue, green, and red baize, and also of printed cottons; on inquiry, we learned that these had been purchased, in exchange for boys, from a tribe called Mambari, which is situated near Bihe. This tribe began the slave-trade with Sebituane only in 1850, and but for the unwillingness of Lechulatebe to allow us to pass, we should have been with Sebituane in time to have prevented it from commencing at all. The Mambari visited in ancient times the chief of the Barotse, whom Sebituane conquered, and he refused to allow any one to sell a child. They never came back again till 1850; and as they had a number of old Portuguese guns marked "Legitimo de Braga", which Sebituane thought would be excellent in any future invasion of Matebele, he offered to purchase them with cattle or ivory, but the Mambari refused every thing except boys about fourteen years of age. The Makololo declare they never heard of people being bought and sold till then, and disliked it, but the desire to possess the guns prevailed, and eight old guns were exchanged for as many boys; these were not their own children, but captives of the black races they had conquered. I have never known in Africa an instance of a parent selling his own offspring. The Makololo were afterward incited to make a foray against some tribes to the eastward; the Mambari bargaining to use their guns in the attack for the captives they might take, and the Makololo were to have all the cattle. They went off with at least two hundred slaves that year. During this foray the Makololo met some Arabs from Zanzibar, who presented them with three English muskets, and in return received about thirty of their captives. In talking with my companions over these matters, the idea was suggested that, if the slave-market were supplied with articles of European manufacture by legitimate commerce, the trade in slaves would become impossible. It seemed more feasible to give the goods, for which the people now part with their servants, in exchange for ivory and other products of the country, and thus prevent the trade at the beginning, than to try to put a stop to it at any of the subsequent steps. This could only be effected by establishing a highway from the coast into the centre of the country.