Length of the Principal Rivers.
EUROPE.
The Danube, 1,800 miles; Dnieper, 1,260; Don, 1,120; Rhine, 691; Elbe, 800; Rhone, 650; Volga, 2,800.
ASIA.
Ganges, 1,970; Irrawaddy, 2,600; Indus, 2,300; Euphrates, 1,750; Amoor, 2,800; Yang-tse-Kiang, 3,300; Hoang-Ho, 2,700; Zambesi, 800; Yenesi, 3,250; Obi, 2,700.
AFRICA.
Nile, 2,500; Niger, 2,600; Senegal, 1,900; Gambia, 1,700.
AMERICA.
Missouri to the Mississippi, 3,100; Missouri to the Gulf, 4,350; Mississippi, 3,160; Amazon, 3,600; River De La Plata, 2,240; St. Lawrence, 2,100; Orinoco, 1,600; Rio Grande, 1,800.