It is gathered that Weeden and Smith became early convinced that a great series of tunnels and catacombs, inhabited by a very sizeable staff of persons besides the old Indian and his wife, underlay the farm. The house was an old peaked relic of the middle seventeenth century with enormous stack chimney and diamond-paned lattice windows, the laboratory being in a lean-to toward the north, where the roof came nearly to the ground. This building stood clear of any other; yet, judging by the different voices heard at odd times within, it must have been accessible through secret passages beneath. These voices, before 1766, were mere mumblings and Negro whisperings and frenzied screams, coupled with curious chants or invocations. After that date, however, they assumed a very singular and terrible cast as they ran the gamut betwixt dronings of dull acquiescence and explosions of frantic fury, rumblings of conversation and whines of entreaty, pantings of eagerness and shouts of protest. They appeared to be in different languages, all known to Curwen, whose rasping accents were frequently distinguishable in reply, reproof, or threatening.