OASIS IN 52 Day after day the river creeps farther over its banks. Wider and wider flows the stream. It covers the fields, and looks like a vast lake. At length the river begins to grow smaller. pass, and now it-flows again in its narrow bed. The water has left a thin coating of soil on the ‘banks. The land is ready for seeds, and the long valley will soon be covered with grain. There will be food for the next dry season. Thus the high slopes supply soil for plants, and Weeks it is carried down by the great river Nile, just as it. is by tiny rills and brooks. 82. Oasis in the Desert of Sahara. What have you read about the great desert ? What river ay flows across its ; Weel eastern part ? Low and High Nile. THE DHSERT. What sea lies east of the desert? What ocean is on the west ? In some parts of the great desert there are springs of fresh water. After days of hot and dusty travel, how glad the thirsty people and camels are to reach aspring! Here they find rest. Villages grow up near these springs. Date trees are planted, and soon bear clusters of sweet fruit. Dates are the chief food of many people who live in hot deserts. Some of the fruit is pounded and pressed into cakes. Camels and horses are sometimes fed on dates. A fertile spot in a desert is called an oasis. The vast barren tract in the north of Africa is the desert of Sahara. 83. Kongo Basin. It is thought that the basin. of the Kongo is about equal in area tothat of the Mis- sissippl. The Kongo river flows on a pla- teau till it reaches the range near the west coast. There it flows through the mountains, and rushes into the low plains that le along the shore. Vessels cannot sail very far up the Kongo. For this reason there is very little trading done with the negroes who live in the Kongo basin. The world ridge ends near the Cape Town. cape of Good Hope. Find Cape Town on the map, page 113.