Whilst speaking of the stone age I may add that in Africa I have never been fortunate enough to find one flint arrowhead or any other flint implement, though I had my eyes about me as diligently as any of my neighbours. No roads are made; no lands levelled; no drains digged; no quarries worked, nor any of the changes made on the earth's surface that might reveal fragments of the primitive manufacture of stone. Yet but little could be inferred from the negative evidence, were it not accompanied by the fact that flint does not exist in any part south of the equator. Quartz might have been used, but no remains exist, except the half-worn millstones, and stones about the size of oranges, used for chipping and making rough the nether millstone. Glazed pipes and earthenware used in smelting iron, show that iron was smelted in the remotest ages in Africa. These earthenware vessels, and fragments of others of a finer texture, were found in the delta of the Zambesi and in other parts in close association with fossil bones, which, on being touched by the tongue, showed as complete an absence of animal matter as the most ancient fossils known in Europe. They were the bones of animals, as hippopotami, water hogs, antelopes, crocodiles, identical with those now living in the country. These were the primitive fauna of Africa, and if vitrified iron from the prodigious number of broken smelting furnaces all over the country was known from the remotest times, the Africans seem to have had a start in the race, at a time when our progenitors were grubbing up flints to save a miserable existence by the game they might kill. Slave-trading seems to have been coeval with the knowledge of iron. The monuments of Egypt show that this curse has venerable antiquity. Some people say, "If so ancient, why try to stop an old established usage now?" Well, some believe that the affliction that befel the most ancient of all the patriarchs, Job, was small-pox. Why then stop the ravages of this venerable disease in London and New York by vaccination? But no one expects any benevolent efforts from those who cavil and carp at efforts made by governments and peoples to heal the enormous open sore of the world. Some profess that they would rather give "their mite" for the degraded of our own countrymen than to "niggers"! Verily it is "a mite," and they most often forget, and make a gift of it to themselves. It is almost an axiom that those who do most for the heathen abroad are most liberal for the heathen at home. It is to this class we turn with hope. With others arguments are useless, and the only answer I care to give is the remark of an English sailor, who, on seeing slave-traders actually at their occupation, said to his companion, "Shiver my timbers, mate, if the devil don't catch these fellows, we might as well have no devil at all."