The Agricultural labor of this part of Africa is certainly very great, and merits the attention of every intelligent inquirer; from the simple fact that, so far as it exhibits the industry of the inhabitants, it shows the means which may be depended upon for a development of the commercial resources of the country. Palm Oil Palm oil is produced in great abundance, as a staple commodity among themselves, as well as for exportation since the common light for houses consists of palm oil burnt in native manufactured lamps, some constructed of iron and others of earthenware. The oil of the nut is the most general in use among the natives, both for light and cooking, because it is the richest, being the most unctuous. This use of the nut-oil is certainly an antiquated custom among the people of this region, whilst those contiguous to Liberia have recently learned that the kernels could be put to commercial use, by the discovery or rather practical application by Mr. Herron, of Grand Bassa, Liberia, and subsequent demand by the French traders. The fact that the Yorubas generally produce their charcoal from the hull of the palm nut, is an evidence of the long-continued and abundant use of the latter article for the manufacture of oil. They have regular establishments for the manufacture of the palm oil, with vats and apparatus (simple though they be), places and persons for each process: as bruising the fruit from the nut, boiling, carrying the pulp to a vat, where it is pressed and washed to extract the oil; one to skim it off from the top of the liquid--another to carry off the fiber of the pulp or bruised fruit, which fiber is also appropriated to kindling and other uses. There is no such method of extracting the oil, as the mistaken idea so frequently reported by African traders from Europe and America, that the natives bruise the nut with stones in holes made in the ground, thereby losing a large percentage of the oil. Even among the crudest they know better than this, and many use shallow troughs, made of wood in some parts of Africa, as the Grebo, Golah, and some other peoples on the western coast, adjacent to Liberia. Palm Trees Cultivated. Camwood. Ivory All through the Yoruba country the palm tree is cultivated, being regularly trimmed and pruned, and never cut down in clearing a farm, except when from age the tree has ceased to bear, or is of the male species, when it is cut down for the wine, which is the sap, extracted from the trunk, in a horizontal position, by boring a hole near the top and catching it in a vessel, when it is drunk either before, during, or after fermentation. Camwood is also very plentiful, but owing to its great weight and the inconvenience at present of transportation, it does not enter extensively into the commerce of these parts, except as dyestuffs in the native markets. Gum elastic or India rubber is plentiful. Ivory enters largely into commerce, being brought by "middle men" from the distant interior.