(41) Concerned primarily with the problems of mystical anatomy, Mr. Pryse relates the various symbols described in the Popol Vuh to the occult centers of consciousness in the human body. Accordingly, he sees in the elastic ball the pineal gland and in Hunahpu and Xbalanque the dual electric current directed along the spinal column. Unfortunately, Mr. Pryse did not translate that portion of the Popol Vuh dealing directly with the initiatory ceremonial. Xibalba he considers to be the shadowy or etheric sphere which, according to the Mystery teachings, was located within the body of the planet itself. The fourth book of the Popol Vuh concludes with an account of the erection of a majestic temple, all white, where was preserved a secret black divining stone, cubical in shape. Gucumatz (or Quetzalcoatl) partakes of many of the attributes of King Solomon: the account of the temple building in the Popol Vuh is a reminder of the story of Solomon's Temple, and undoubtedly has a similar significance. Brasseur de Bourbourg was first attracted to the study of religious parallelisms in the Popol Vuh by the fact that the temple together with the black stone which it contained, was named the Caabaha, a name astonishingly similar to that of the Temple, or Caaba, which contains the sacred black stone of Islam.