It is also said that a courier carrying a letter to a London physician returned with the potion prescribed within twenty-four hours, having traversed 148 miles.

There is little doubt of the ability of these couriers to tire out any horse.

The couriers who accompany the diligences in Spain often fatigue the animals who draw the vehicles.
At the present time in this country the Indians furnish examples of marvelous feats of running.

The Tauri-Mauri Indians, who live in the heart of the Sierra Madre Mountains, are probably the most wonderful long-distance runners in the world.

Their name in the language of the mountain Mexicans means foot-runners; and there is little doubt that they perform athletic feats which equal the best in the days of the Olympian games.