The strength of the Wagogo lies in their comparative numbers. As the people seldom travel to the coast, their scattered villages are full of fighting men. Moreover, Uchawi or black magic here numbers few believers, consequently those drones of the social hive, the Waganga, or medicine-men, are not numerous. The Wagogo seldom sell their children and relations, yet there is no order against the practice. They barter for slaves their salt and ivory, the principal produce of the country. No caravan ever passes through the country without investing capital in the salt-bitter substance which is gathered in flakes efflorescing; from the dried mud upon the surface of the Mbuga, or swampy hollows; the best and the cheapest is found in the district of Kanyenye. It is washed to clear it of dirt, boiled till it crystallises, spread upon clean and smoothed ground, and moulded with the hands into rude cones about half a foot in length, which are bought at the rate of 7-10 for a Shukkah, and are sold at a high premium after a few days’ march. Ugogo supplies western Usagara and the eastern regions of Unyamwezi with this article. It is, however, far inferior to the produce of the Rusugi pits, in Uvinza, which, on account of its “sweetness,” finds its way throughout the centre of Africa. Elephants are numerous in the country: every forest is filled with deep traps, and during droughthy seasons many are found dead in the jungle. The country is divided into districts; the tusks become the property of the Sultan within whose boundaries the animal falls, and the meat is divided amongst his subjects. Ivory is given in barter for slaves: this practice assures to caravans a hold upon the people, who, having an active commerce with the coast, cannot afford to be shut out from it. The Wagogo are so greedy of serviles that every gang leaves among them some of its live stock--the principal want of the listless and indolent cultivator. The wild captives bought in the interior, wayworn and fond of change, are persuaded by a word to desert; they take the first opportunity of slipping away from their masters, generally stealing a weapon and a little cloth or rations for immediate use. Their new masters send them off the road lest they should be recognised and claimed: after a time a large hoe is placed in their hands, and the fools feel, when too late, that they have exchanged an easy for a hard life. The Wagogo sell their fellow tribe-men only when convicted of magic; though sometimes parents, when in distress, part with their children. The same is the case amongst their northern neighbours, the Wamasai, the Wahumba, and the Wakwafi, who, however, are rarely in the market, and who, when there, though remarkable for strength and intelligence, are little prized, in consequence of their obstinate and untameable characters;--many of them would rather die under the stick than level themselves with women by using a hoe.