The territory of Gibraltar was flat, and naturally fertile, watered by rivers and brooks, besides being artificially irrigated by small channels, necessary in the frequent droughts. Everything desirable for food and pleasant to the sight grew here in abundance, the air was filled with birds as beautiful as wandering blossoms, and the rivers teemed with many-coloured fish. But into this Indian Paradise death had entered, and these swamps were the lairs of the deadliest fevers that devastate humanity. In the rainy season the merchants left Gibraltar, just as the rich do Rome, and retired to Merida or Maracaibo to escape the pestilence that walked not merely in darkness but even in the bright noon. At six leagues from this town and its 1,500 inhabitants, ran a river navigable by vessels of fifty tons' burthen. Maracaibo itself had a spacious and secure port, and was well adapted for building vessels, owing to the abundance of timber in the neighbourhood. In the small island of Borrica were fed great numbers of goats, which were bred chiefly for their skins. In curious contradistinction to all this bustle of commerce, life, and wealth, on the south-east border of the lake lived the Bravo-Indians, a savage race, who had never been subdued by the Spaniard. They also, like the fishermen, dwelt in huts built in the branches of the mangrove trees at the very edge of the water, safe from the floods, and from the equally annoying, though less fatal, visitation of the mosquitoes. Beyond them to the west spread a dry and arid country--where nothing but cacti and stunted, bitter shrubs grew, so thorny as to be almost impassable by the traveller--waste and barren. Here the Spaniards pastured a few flocks, and the only houses were the huts of the armed shepherds who tended the lonely herds. These cattle were killed chiefly for their fat and hides, the flesh being left for the flocks of merchant birds--a sort of vulture, four or five of whom would pick an ox to the bone in a day or two. Lolonnois, arriving at one of the islands in the gulf, landed and took in provisions, not wishing to arrive at the bar till daybreak, in hopes of surprising the fort; and anchoring, out of sight of the watch-tower weighed anchor in the evening from the island of Onega, and sailed all night, but was seen by the sentinels, who immediately made signals to the fort, which discharged its cannon and announced the approach of an enemy.