POPULATION.――The population of Africa, exclusive of its Islands, is estimated by Dr. Behm, in Peterman’s “Mittheilungen,” at 201,787,000. Of these the number of Protestant communicants in the various colonial and mission churches was reported in 1880 as 122,700; the number composing the communities connected with these churches 506,966; the number of Jews, 350,000; of Coptic, Abyssinian and similar Christians, 4,535,000; of Mohammedans, 51,170,000; of heathen, 145,225,000. To carry the gospel to these millions, sixty four societies are at work. In South Africa and the colonies and Sierra Leone and Liberia there are connected with colonial churches 468 ministers, evangelists and teachers, of whom 54 are natives. The other white missionaries and teachers on the continent, are reported as 662, with 1095 natives, making 1757 mission workers proper, and 2,255 ministers, missionaries and teachers of all kinds, engaged in religious labors. [Illustration: MAP OF EXPLORATIONS SINCE AUGUST, 1877.] The population of Liberia, including Medina, may be 1,400,000. The largest proportion of the natives are Mohammedans, perhaps 1,000,000. There are 26 Baptist churches, reporting 24 ministers and 1,928 communicants. The Protestant Episcopal Church of the United States reports one bishop and 31 others, missionaries, teachers and assistants, 361 communicants, 597 Sunday-school scholars and 415 in day and boarding-schools. The report of the Methodist Episcopal Church of the United States, gives 25 ministers, 10 assistants, 4 native preachers and 47 local preachers and teachers, 2,200 members, 1,831 Sabbath-school scholars and 300 day scholars. The American Presbyterian Church (North) reports 9 missionaries and assistants, 270 communicants, and 65 pupils in schools. Total 104 ministers, assistants and teachers reported, 4,759 communicants, 2,428 Sabbath-school scholars and 780 day pupils. It is a suggestive truth that a few only of the “104 ministers, assistants and teachers” laboring in Liberia were sent by missionary societies, but that nearly all of them were sent or are the children of men sent by the American Colonization Society as emigrants, and established there with means of subsistence. This single fact teaches that in proportion as the emigrants from this country are multiplied, the Christian laborers are also multiplied.