grey horse, across the saddle of which a pair of large saddle bags were slung, in which to carry them. We had not long arrived at the pulperia when a native rode up, mounted on a fine "oscuro," or _dark_ brown horse, with a long flowing mane and tail, his reins, breastplate, and stirrups all mounted in solid silver. He was a good-looking man, something over thirty years of age; a slight but firmly knit figure as he sat on his horse, with the easy, graceful seat of one born almost in the saddle. His wide black "bombachos," or loose trousers, tucked inside high boots, ornamented with silver spurs. The broad-brimmed felt hat, the long "facon," a two-edged dagger, stuck in his belt, and a white silk handkerchief tied loosely round his neck, all betokened the "Spanish caballero," the free, independent life of the horseman on the open plain. Quickly dismounting, he carelessly strolled into the "pulperia," with the usual "Buenos tardes Senores," "Good afternoon, gentlemen." But as he passed me I noticed that he was fully armed, and had also an alert watchful look about him, and the thought passed through my mind that here at any rate was no ordinary man. He talked a few moments to the pulpero, somewhat earnestly, and then came forward, raising his hat, and offered me a cigarette, remarking something about the heat of the afternoon. Soon after, I and the boy, having collected our purchases, mounted our horses to return. Just as we rode round the edge of the outbuildings a dark-skinned individual in somewhat tattered garments rose from a low seat where he had been sitting smoking, and came hurriedly forward. "Did you speak to the Senor with the 'oscuro,'" he asked. "Yes!" I replied, "what about him?" The mulatto smiled and showed his white teeth, and then said, almost in a whisper, "You do not know him! Mamerto Godez! Cuidado! (Beware)."