The two short stories included in this volume are reprints:—the "Story of a Piebald Horse" from a book of travel and adventure in South America, long out of print; the other, "NiÑo Diablo," is taken, by permission, from Macmillan's Magazine. The two long stories now appear for the first time, excepting only the incidents of the English invasion told in "El OmbÚ," and the Appendix to the same story, which formed part of an article describing the game of El Pato in the Badminton Magazine.