East of the central part of the Great Central Plain are five of the largest lakes in the world. When you are in a boat in the middle of any one of them you cannot see the land on any side. They are called the Great Lakes.

Their names are Superior, Michigan, Huron, Erie and Ontario. They are all joined together, and from the last a large river runs into the Gulf of St. Lawrence. It has the same name as the gulf.

There are many other smaller lakes in North America where the land is low and the water from the rivers and streams fills up the hollows. Nearly all have fresh water like the rivers. A very few, like Great Salt Lake, contain salt water.

Notebook Work: Label the top of your notebook page with "LESSON 42." Sketch the Great Lakes. Label Superior, Michigan, Huron, Erie and Ontario. Label the drawing, "GREAT LAKES."