In the end, certain types of Yogi appear to develop the full talents of a materializing medium and are capable of producing the phenomena that we associate with a medium of the power of Eusapia Palladino. But--and it is a very important “but”--these phenomena are capable of production in full tropic daylight. From the days of Jacolliot[51] to those of recent Theosophical investigations, Oriental magic has never been brought to real test conditions, but in the records gathered by independent students there is ample ground for stating that the genuine occult phenomena (as distinct from mere fakir’s conjuring tricks) occur independently of darkness or special light conditions. When we consider the fuss made by European mediums over even twilight conditions, it is remarkable that these offer no obstacle to the Oriental “spirits.” These phenomena, too, are not confined to orthodox Hindu, Brahmin, Tantvik, or Guru followers of any particular creed, race, or religion. Certain Indian Moslem sects produce devotees capable of equivalent phenomena, but variants of obscure Tibetan sects, Burmese, Malay, Mohammedans, and followers of both theistic and pantheistic religions have equal powers. The idolater, the Muslim, and the Christian medium all share the same belief in “spirit” control and in certain states produce the same results. Where we may learn something from the East is not in the line of morals, for their morals are different from ours--and many of their religious customs revoltingly beastly--but in the way of the physical induction of the psychic state. The basis of a great many Yogas is the liberation of psychoplasm and ectoplasm by a combination of concentration on certain internal centres and the repetition of spells or sonorous magical evocations. These affect the breathing so that in effect the body is subjected to a definite rhythmical vibration. It is physical exercise of mind and brain, applying mind-force to the stimulation and excitement of internal nerve centres. These six centres are visualized mentally as lotuses. They cannot be precisely located in scientific anatomy, but correspond in most cases with central nervous plexuses and they are as well known in Mohammedan and Zoroastrian mystic cults, as they are in the Indian Upanishads and Tantras, and are familiar to the Indians of Yucatan and Guatemala, where ritual, combined with a species of physical massage, is employed to initiate the hierophant into the tribal mysteries. The school of Western occultists who hold the theory of the all-pervading astral or magic light or fire, hold that these “centres” open, or act as concentrators of an exterior, all-prevailing force which is thus conducted to the consciousness, enabling the operator to make contact with another plane.