"Let us ride to the Estancia, then; it will only take us a couple of hours."

"We will be off," said Pedrito; "Juan and Lopez will remain here, while Pepe and I escort the chica. Kiss your brothers, Mercedes. Now then, Pepe; you two keep good watch and expect us at sunset."

Mercedes waved a parting farewell to her brothers, and, escorted by Pepe and Pedro, started at a gallop for San Julian.

At about three o'clock they perceived, fifty yards from them, the estancia, which Don Valentine and his daughter had reached hardly two hours before.

The Estancia of San Julian, undoubtedly the richest and strongest position on the entire Patagonian coast, stood on a peninsula six miles in circumference, covered with wood and pastures, on which upwards of two thousand head of cattle grazed at liberty. Surrounded by the sea, which forms a natural fortification, the strip of land, twenty feet in width at the most, was guarded by a battery of five heavy guns. The house, which was surrounded by lofty parapeted and bastioned walls, was a species of fortress, capable of sustaining a regular siege, thanks to eight guns, which, planted on the four bastions, defended the approaches. It was composed of a large main building with a terraced roof, having ten windows on the frontage, and with two wings. A large flight of steps, protected by a double curiously-worked balustrade, protected by a verandah, gave access to the rooms, which were furnished with the simple and picturesque luxury peculiar to the Spanish farms of America.

Between the house and the wall, in which there was, opposite the steps, a cedar gate five inches thick, and lined with strong iron plates, extended a large English garden, well wooded and beautifully laid out. The space left free behind the farm was occupied by the corrals in which the cattle were shut up at night, and an immense courtyard in which the annual slaughtering took place.

This white house was gay and pleasant, and could be seen for some distance off, half-hidden by the branches which crowned it with foliage. From the first floor windows there was a view on one side of the sea, on the other of the Rio Negro, which ran capriciously through the plain like a silver thread, and was lost in the azure distance of the horizon.

Ever since the last war with the Indians, ten years back, and during which the estancia was all but surprised by the Aucas, a mirador had been built on the roof of the main building, where a sentry stood day and night, ordered to watch and announce the approach of strangers upon a buffalo horn. In addition, the isthmus battery was guarded by six men, ready to discharge the guns at the slightest alarm. Hence, when the bomberos were still some distance from the Estancia, their coming had been signalled, and Don Blas Salazar, accompanied by Patito, was standing behind the battery in order to challenge them when they came within hail.

The bomberos were aware of the orders, which are common to all the Spanish establishments, especially on the borders, where people are exposed to the continual depredations of the Indians. On coming within twenty paces of the battery, the two men stopped and waited.

"Who goes there?" a voice shouted.