The peculiar formation of the country may explain why there is such a difference in the vegetation between the 20th and 30th parallels of latitude in South Africa and the same latitudes in Central Australia. The want of vegetation is as true of some parts too in the centre of South America as of Australia; and the cause of the difference holds out a probability for the success of artesian wells in extensive tracts of Africa now unpeopled solely on account of the want of surface water. We may be allowed to speculate a little at least on the fact of much greater vegetation, which, from whatever source it comes, presents for South Africa prospects of future greatness which we can not hope for in Central Australia. As the interior districts of the Cape Colony are daily becoming of higher value, offering to honest industry a fair remuneration for capital, and having a climate unequaled in salubrity for consumptive patients, I should unhesitatingly recommend any farmer at all afraid of that complaint in his family to try this colony. With the means of education already possessed, and the onward and upward movement of the Cape population, he need entertain no apprehensions of his family sinking into barbarism. The route we at this time followed ran along the middle, or skirted the western zone before alluded to, until we reached the latitude of Lake Ngami, where a totally different country begins. While in the colony, we passed through districts inhabited by the descendants of Dutch and French refugees who had fled from religious persecution. Those living near the capital differ but little from the middle classes in English counties, and are distinguished by public spirit and general intelligence; while those situated far from the centres of civilization are less informed, but are a body of frugal, industrious, and hospitable peasantry. A most efficient system of public instruction was established in the time of Governor Sir George Napier, on a plan drawn up in a great measure by that accomplished philosopher, Sir John Herschel. The system had to contend with less sectarian rancor than elsewhere; indeed, until quite recently, that spirit, except in a mild form, was unknown. The population here described ought not to be confounded with some Boers who fled from British rule on account of the emancipation of their Hottentot slaves, and perhaps never would have been so had not every now and then some Rip Van Winkle started forth at the Cape to justify in the public prints the deeds of blood and slave-hunting in the far interior. It is therefore not to be wondered at if the whole race is confounded and held in low estimation by those who do not know the real composition of the Cape community.