An oasis, by the way, does not necessarily consist, as the reading public seems to believe, of a clump of palm-trees beside a brackish well, many of them being great stretches of well-watered and cultivated soil, sometimes many square miles in extent, and rich in fig, pomegranate, orange, apricot, and olive trees. The oasis of Kaouer, for example, with its one hundred thousand date-palms, furnishes subsistence for the inhabitants of a score of straggling villages, with their camels, flocks, and herds. There are said to be four million date-palms in the oases of the Algerian Sahara alone, and to cut down one of them is considered as much of a crime as arson is in a great city, for its fruit is a sufficient food, from its leaves a shelter can be made which will keep out sun and wind and rain, and its shade protects life and cultivation. Many date plantations and even vineyards have flourished for several years past in southernmost Algeria by means of water from below the surface, while the chief of the French geodetic survey recently announced that a tract in the very heart of the Sahara, nine degrees in longitude by twelve degrees in latitude, is already sufficiently watered for the raising of grain. The reports of these expeditions and commissions bear with painstaking thoroughness on the productivity of the soil, the suitability of the climate, the existence and accessibility of forest wealth, the presence and probable extent of mineral veins, and on transportation by road, rail, and river over all that huge territory which comprises France's African empire. The story of French success in the exploration, the civilisation, the administration, and the exploitation of Africa is one of the wonder-tales of history. That she has relied on the resources of science rather than on those of militarism makes her achievement the more remarkable, for where England's possessions have largely been gained by punitive expeditions, France has won hers by pacific penetration. Look at Senegambia as it is now under French rule, and compare its condition with what it was as Mungo Park describes it at the end of the eighteenth century; contrast the modernised Dahomey of to-day, with its railways, schools, and hospitals, with the blood-soaked, cannibal country of the early '60's; remember that Algeria has doubled in population since the last Dey, by striking the French consul with his fan, turned his country into a French department—and you will have a bird's-eye view, as it were, of what the French have accomplished in the colonising field.