If anything in a work of this class could pretend to a serious purpose, I do not conceal that, in addition to the mere desire to inform, a special reason exists just now for writing about Africa--a reason so urgent that I excuse myself with difficulty for introducing so grave a problem in so slight a setting. The reader who runs his eye over the "Heart-Disease of Africa" will discover how great the need is for arousing afresh that truer interest in the Dark Continent which since Livingstone's time has almost died away. To many modern travellers Africa is simply a country to be explored; to Livingstone it was a land to be pitied and redeemed. And recent events on Lake Nyassa have stirred a new desire in the hearts of those who care for native Africa that "the open sore of the world" should have a last and decisive treatment at the hands of England. HENRY DRUMMOND. TROPICAL AFRICA. I THE WATER-ROUTE TO THE HEART OF AFRICA. THE ZAMBESI AND SHIRE. Three distinct Africas are known to the modern world--North Africa, where men go for health; South Africa, where they go for money; and Central Africa, where they go for adventure. The first, the old Africa of Augustine and Carthage, every one knows from history; the geography of the second, the Africa of the Zulu and the diamond, has been taught us by two Universal Educators--War and the Stock-Exchange; but our knowledge of the third, the Africa of Livingstone and Stanley, is still fitly symbolized by the vacant look upon our maps which tells how long this mysterious land has kept its secret. Into the heart of this mysterious Africa I wish to take you with me now. And let me magnify my subject by saying at once that it is a wonderful thing to see. It is a wonderful thing to start from the civilization of Europe, pass up these mighty rivers, and work your way into that unknown land--work your way alone, and on foot, mile after mile, month after month, among strange birds and beasts and plants and insects, meeting tribes which have no name, speaking tongues which no man can interpret, till you have reached its secret heart, and stood where white man has never trod before. It is a wonderful thing to look at this weird world of human beings--half animal half children, wholly savage and wholly heathen; and to turn and come back again to civilization before the impressions have had time to fade, and while the myriad problems of so strange a spectacle are still seething in the mind. It is an education to see this sight--an education in the meaning and history of man. To have been here is to have lived before Menes. It is to have watched the dawn of evolution. It is to have the great moral and social problems of life, of anthropology, of ethnology, and even of theology, brought home to the imagination in the most new and startling light.