Page:Popular Science Monthly Volume 53.djvu/743



N the east, the west, and the north, the boundaries of the Russian Empire are drawn with finality. Its territory ends where the land ends. The quarter of this empire which is comprised in Europe is defined with equal clearness on three sides and a half. Only along the line of contact with western Europe, shown on our map facing page 724, is debatable territory to be found. Even here a natural frontier