Since 1885, when the African product first made its presence felt in the rubber market, the natives of that continent have gathered and sent to Europe over 250,000 tons of rubber, the outstanding fact being that all this latex represents sylvan produce, the replacement of which is extremely doubtful. Dr. Chevalier is of the opinion that the natives themselves received for the total output 500,000,000 francs or approximately 9d. per pound. This I very much doubt, for it must not be forgotten that a large proportion of the rubber was obtained, if not for nothing, then for very little. [Sidenote: WEST AFRICAN VARIETIES] The principal sources of rubber latex are the Funtumia (Ireh) and the Landolphia varieties, which, to the ordinary reader, fall respectively under the classification of trees and vines. The full-grown Funtumia tree measures from 2 ft. 6 in. to 4 ft., or more, in circumference. The growth of the Landolphia is wild and erratic, creeping along the ground sometimes for several yards, then gradually winding its way through the undergrowth and away up the limbs and branches of the firmly rooted forest giants to a height of forty to fifty feet, then in the full enjoyment of light, it becomes vigorously prolific, sending its leafy branches in all directions, and interlacing the trees overhead. Most scientists seem to agree that it is only when the Landolphia emerges into the sunlight at the tree tops that material size is imparted to the main stem. From the economic standpoint it is important to bear in mind that ordinarily a Landolphia vine takes from ten to twenty years to climb its way up the tree trunk of the average forest tree, at which period the main stem of the vine is seldom more than one inch in diameter. Beyond question by far the larger proportions of rubber from Central Africa have been obtained from the Landolphia vines, that from the Congo basin almost entirely so. Next in order comes the output from Funtumia forests of the more northerly latitudes, and beyond this a certain amount of grass rubber has been obtained, but the results barely justify the trouble involved. The extraordinary development and almost general investment in the rubber industry have familiarized the public with rubber production. Almost every schoolboy could write an essay upon the herring-bone or half herring-bone tapping, coolie lines, spacing and so forth. The production of rubber conveys to most minds well-ordered estates of upright trees, model workmen’s dwellings, drying and boiling sheds, constructed by skilled Europeans, rolling tables, hot and cold water supplies, all under the control of neatly clad coolies. None of these conditions apply to West Africa, for there everything is to-day primitive.