At first they built for the tribe, working together like beavers in common cause against nature and their enemies. Home life and domestic architecture began among them with the wooden-fort community, the idea of which was no doubt derived from the frontier defences of Virginia, and modified by the Kentuckians with a view to domestic use. This building habit culminated in the erection of some two hundred rustic castles, the sites of which in some instances have been identified. It was a singularly fit sort of structure, adjusting itself desperately and economically to the necessities of environment. For the time society lapsed into a state which, but for the want of lords and retainers, was feudalism of the rudest kind. There were gates for sally and swift retreat, bastions for defence, and loop-holes in cabin walls for deadly volleys. There were hunting-parties winding forth stealthily without horn or hound, and returning with game that would have graced the great feudal halls. There was siege, too, and suffering, and death enough, God knows, mingled with the lowing of cattle and the clatter of looms. Some morning, even, you might have seen a slight girl trip covertly out to the little cottonpatch in one corner of the enclosure, and, blushing crimson over the snowy cotton-bolls, pick the wherewithal to spin her bridal dress; for in these forts they married also and bore children. Many a Kentucky family must trace its origin through the tribal communities pent up within a stockade, and discover that the family plate consisted then of a tin cup, and, haply, an iron fork. But, as soon as might be, this compulsory village life broke eagerly asunder into private homes. The common building form was that of the log-house. It is needful to distinguish this from the log-house of the mountaineer, which is found throughout eastern Kentucky to-day. Encompassed by all difficulties, the pioneer yet reared himself a better, more enduring habitation. One of these, still intact after the lapse of more than a century, stands as a singularly interesting type of its kind, and brings us face to face with primitive architecture. "Mulberry Hill," a double house, two and a half stories high, with a central hall, was built in Jefferson County, near Louisville, in 1785, for John Clark, the father of General George Rogers Clark.