As the strong Argand blaze lit up the entire chamber the doctor saw that the wall opposite the door, between the two groups of torturing appliances in the corners, was covered with pegs from which hung a set of shapeless looking robes of a rather dismal yellowish-white. But far more interesting were the two vacant walls, both of which were thickly covered with mystic symbols and formulae roughly chiseled in the smooth dressed stone. The damp floor also bore marks of carving; and with but little difficulty Willett deciphered a huge pentagram in the center, with a plain circle about three feet wide halfway between this and each corner. In one of these four circles, near where a yellowish robe had been flung carelessly down, there stood a shallow kylix of the sort found on the shelves above the whip-rack; and just outside the periphery was one of the Phaleron jugs from the shelves in the other room, its tag numbered 118. This was unstoppered, and proved upon inspection to be empty; but the explorer saw with a shiver that the kylix was not.