Africa appears to be the continent which presents the greatest number of rubber-yielding plants; in Liberia the precious exudation is obtained from some sixteen different kinds of trees and vines, varying as to the quality and character of rubber yielded. The rubber of Liberia is not considered of the highest class, but it is of good grade; the natives of the interior are skilled in its collection; there is no doubt that great quantities of wild rubber are still to be obtained within the limits of the Republic and experiments in rubber-planting have already been made with promise. Sir Harry Johnston gives a long list of other natural products which have been exported from Liberia at one time or another in varying quantities. There was a time when camwood found a ready market and formed perhaps the most important element in Liberian trade--of course with the invention of other dye-stuffs, the use of camwood, annatto, etc., has practically ceased; the name “Grain Coast” or “Pepper Coast” was long given to this country on account of the malagueta pepper which was exported in great quantities--this, too, has ceased to be a product of practical importance; kola nuts are to some degree exported from Liberia, and with the ever-increasing use of the kola in America and European countries, trade along this line should develop; ivory has always been among the export products of Liberia, though it has never had great significance; vegetable ivory nuts are produced here and to some extent form an article of trade--the demand for them in button-making is large and increasing, and exportation of them may reasonably be developed; hides and oil-yielding seeds complete the list of actual native export products. Sir Harry Johnston calls attention to the fact that the country is rich in ebony, mahogany, and other fine woods, in copal and other gums, in ground nuts, fruits, and minerals; these, however, have never been actual materials for export; all are valuable, however, and trade in them might be developed.