When the wind blows in the same direction for several hours it washes the sand from the lake bottom high up on the shore. It then blows the sand into heaps resembling snowdrifts. It sometimes blows the sand-laden water in such a way as to form long sandbars in shoal water. Some lakes have no outlets. The water of such lakes disappears through evaporation. After many years these lakes become salt. Great Salt Lake in United States, and the Cas pian Sea in Asia, are A VILLAGE ON A MUD-PLAIN plains of old lake bottoms. Describe the two scenes on this page. Take a walk to the nearest pond or lake. Find all the forms spoken of in this text. Model the pond or lake in sand; sketch it and name all the parts. Some lakes are very large. Steamers and many kinds of vessels sail upon them. These vessels carry people, and all kinds of merchandise for trade. See the kind of vessel used on the Great Lakes of United States on page 65. Severe winds often blow across the lakes and beat the water into great waves which are dangerous to shipping. RICH FARMING LAND IN OLD LAKE BASIN. good illustrations of salt lakes. Find them. There are thousands of beautiful lakes in many parts of North America and Europe. Many people visit, or live upon, their shores during the summer months. Why? Find an isthmus in the picture. How is a cape different from a peninsula? Peninsulas have capes upon them. Find them in the picture. Tell how the peninsulas in the picture differ from the islands. A promontory is a high, rocky cape. Study and describe each of the land and water forms in the picture. Go out directly after a rain and find all of these forms, Find them on the near est body of water. Model and sketch each. Bring in pictures of land and water forms. Find all of these forms in the world pictures and on the globe. extent that some parts of it are always being disturbed by winds. Any disturbance of its surface waters stretches out over over a great distance. This is shown by the great variation in the height and in the more rapid movements of the waves as they come tumbling over each other upon the shore. (See page 92.) While waves may be PLANTING BEACH GRASS CAPE COD. During a storm or high wind the water is lashed into great waves which sometimes rise thirty or forty feet. Such waves break upon the shores with tremendous force. The continuous action of the restless sea, together with the grinding of one piece of rock upon another, break and wear the larger pieces into smaller and still smaller rounded fragments. These water-worn rock fragments are pebbles. The waves wash the pebbles upon the beach, making a pebble-beach. The continuous action of the water, and of one pebble upon another, wears the pebbles to sand and soil. On sandy shores near shallow water this soil, together with the sand which |