Master CVV selected three mediums for his experiment. He took reins of their physical, mental and astral segments under his control. Whenever he needs their support he used to send them into trance and work out. He kept the key with him always. In a minute’s time he would separate their astrals from the physical bodies. When thus separated the doctors would undoubtedly declare them dead. Until the work is completed they could not come to conscience. Prana retains somewhere. But they would dictate what they were finding there in the astral worlds. Mother CV used to keep up both the physical and meta-physical levels alike. She took one year to come to that parallel level.