By this time negro slaves were being brought to the colony from Africa. They did the household work, while the colonists cultivated the fields These slaves did most of the work on a new wooden church which was set up just outside the fort, for the new minister. Governor Van Twiller began improving the colony by having three windmills built, to take the place of the horse-mill. But he had them placed in such a position that the building in the fort cut off the wind from their sails, and the mills were almost useless. The Governor did not neglect his own comfort, for within Fort Amsterdam he built for himself a fine house of brick--finer than any in the little settlement--and on one of the bouweries nearest the fort, he erected a summer-house. On another bouwerie he laid out a tobacco plantation, and had slaves paid by the Company to look after it. [Illustration: Van Twiller's Defiance.] When Van Twiller had been Governor three years, he gave to one of the colonists a farm on the western side of the city along the Hudson River. The colonist died the year after the farm was given him, leaving his widow, Annetje Jans, to care for the property. Years after, when Queen Anne ruled in England, and the English had come into possession of New Netherland, she gave the Annetje Jans farm to Trinity Church. That was almost two centuries ago. What was once a farm is now a great business section, crossed and recrossed by streets. Trinity Church has held it through all the years, and holds it still. Close upon the time when the Jans farm was given away by Governor Van Twiller, a sailor of note, who had visited almost every country in the world, founded a colony on Staten Island. This sailor was Captain David Pietersen De Vries. Staten Island attracted him because of its beauty. After the colony was well started, De Vries travelled between New Netherland and Holland, and he will be met with again in this story. [Illustration: Landing of Dutch Colony on Staten Island.] Although Governor Van Twiller did not do much for the colonists, he was very careful to look after his own affairs. He bought from the Indians, for some goods of small value, the little spot now called Governor's Island; which was then known as Nut Island, because of the many nut-trees that grew there. There is little doubt but that Governor's Island was once a part of Long Island. It is separated from it now by a deep arm of water called Buttermilk Channel. The channel was so narrow and so shallow in Van Twiller's time that the cattle could wade across it. It was given its name more than a hundred years ago, from boats which drew very little water, and were the only craft able to get through the channel, and which took buttermilk from Long Island to the markets of New York. [Illustration: Governor's Island and the Battery in 1850.]