advanced occultists is due largely to their knowledge of this fact and their intelligent use of this stored-up energy. The Yogis know that by certain forms of breathing they establish certain relations with the supply of prana and may draw on the same for what they require. Not only do they strengthen all parts of their body in this way, but the brain itself may receive increased energy from the same source, and latent faculties be developed and psychic powers attained. One who has mastered the science of storing away prana, either consciously or unconsciously, often radiates vitality, and strength which is felt by those coming in contact with him, and such a person may impart this strength to others, and give them increased vitality and health. What is called "magnetic healing" is performed in this way, although many practitioners are not aware of the source of their power.
Western scientists have been dimly aware of this great principle with which the air is charged, but finding that they could find no chemical trace of it, or make it register on any of their instruments, they have generally treated the Oriental theory with disdain. They could not explain this principle, and so denied it. They seem, however, to recognize that the air in certain places possesses a greater amount of "something" and sick people are directed by their physicians to seek such places in hopes of regaining lost health.
The oxygen in the air is appropriated by the blood and is made use of by the circulatory system. The prana in the air is appropriated by the nervous system, and is used in its work. And as the oxy-
