Note 2 — Chapter IX · IN CLOUDLAND

“Certainly it is a marvelous fact in the history of the Mammalia,” says Charles Darwin, “that in South America a native horse should have lived and disappeared, to be succeeded in after ages by the countless herds descended from the few introduced with the Spanish colonists!”—Journal of Researches into the Natural History and Geology of the Countries Visited during the Voyage of H. M. S. “Beagle” round the World, Chap. VII. ↑