We saw a large, black circle, drawn with charcoal. An altar covered with black cloth was placed in the center upon a carpet of red satin. A Chaldee Bible was laid open, together with a skull, and a silver crucifix was fastened upon the altar. Spirits of wine were burning in a silver vessel. A thick smoke of frankincense darkened the room and almost extinguished the lights.On a sudden we all felt at the same instant a stroke as of a flash of lightning, so powerful that it obliged us to quit each other's hands, a terrible thunder shook the house, the locks jarred, the doors creaked, the cover of the silver box fell down and extinguished the light, and on the opposite wall over the chimney-piece appeared a human figure in a bloody shirt, with the paleness of death on its countenance."Who calls me?" said a hollow, hardly intelligible voice.