The island of Grenada, as is indeed the case with most of the Windward Islands, is well watered by rivers running from the mountains. Some of the streams are of considerable size, and are never dry in seasons of the greatest drought. The water, conducted by canals from these rivers, constituted the chief motive power for the machinery on the sugar estates, although in a few cases windmills were used for that purpose. The estates comprised each an area of some two to five hundred acres, a considerable portion of which was planted with the cane. The remainder was improved as sites for the various buildings, gardens for the slaves, fields of corn and "guinea grass," and other purposes. The "sugar works" were placed as near the centre of the estate as convenience would admit. The manager's house, which was a large, inconvenient, one-story building, with numerous out-houses, was generally situated on an elevated spot of land in the vicinity. Another house of smaller size was occupied by the overseers. At no great distance from the "sugar works," and sometimes in close proximity, was a collection of huts, thirty or forty in number, cheaply constructed, with thatched roofs, and huddled together without any regard to order, or even convenience. These were known as "negro houses," the dwellings of the slaves, where, when their daily tasks were ended, they could rest from their labors, and enjoy, without restraint, the few comforts which shed a gleam of sunshine over their condition. In their houses and families, the slaves made their own regulations. Their enjoyments consisted chiefly in social gatherings and gossip. The women derived gratification from showy dresses and decorations, and sometimes displayed their barbarian tendencies by indulging a love for scandal and mischief-making. They seemed constitutionally gay and cheerful, as was seen by their merry jokes and songs; and a loud, ringing, contagious, African laugh, in the jocund chorus of which many joined, was elicited on very slight provocation. In their habitations the slaves were greatly influenced, and sometimes controlled, by one or more intelligent individuals, who held superior positions, as is often the case in other communities. The most important person among them was the "head field-driver," who held that position on account of his superior intelligence and fidelity. The "head boiler" was also a man of consequence among them, also the head carpenter, cooper, and mule-driver. These and others filled situations of responsibility, which required more than ordinary capacity. Of these trusts they were proud.