The Bishop of Cape Town, in speaking of the disastrous effects of the late Kaffir war, has recently expressed the opinion, that, in less than five years, another equally terrible in its results, in all probability, will occur between the whites and the Zulus; and as a consequence of the large number of Europeans who are mixing among them, and whose chief object appears to be their own enrichment, at the expense of that people. THE AMERICAN MISSIONARY ASSOCIATION, which is organized on strictly Anti-Slavery principles, has a mission at Kaw-Mendi, 50 or 60 miles north-west of Liberia, which belongs to the class of native missions. This mission had its origin in the return of the “Amistad Slaves,” to their native country, in 1842. The Rev. Mr. Raymond went out at the head of this mission. On reaching Africa, he found wars everywhere prevailing to such an extent, that he could not reach the Mendi country, to which these people belonged, and was forced to settle at Kaw-Mendi, but 40 miles from the coast. The continuation of these wars greatly hindered the progress of the mission, as long as Mr. Raymond lived, and for more than a year after his successor, the Rev. George Thompson, took charge of the station, in 1848. Mr. Thompson thus became painfully familiar with African warfare; and represents it as having been conducted with the utmost cruelty—whole towns being depopulated and multitudes driven to the coast and sold to the slave-traders of the Gallinas. Mr. Thompson was in Africa about two years and a half, and was also greatly hindered by these wars in his efforts to instruct the people; until, happily, the British squadron forcibly suppressed the traffic in slaves, at Grand Cape Mount and the Gallinas, and thus put an end to the market. The supplies of European merchandise being thus cut off from the slave-trading kings, along the coast, they were induced to sell their territory to President Roberts, and place themselves under the jurisdiction of Liberia. One of the stipulations in the treaties, requires the Liberians to establish trading posts in the territory, for the supply of goods to the native population; that they might no longer have any excuse for continuing the slave-trade.