You can discover much on the nature of prana if you use the books which you possess and should possess. In my book A Treatise on Cosmic Fire, pages 77-116, and in A.A.B.'s book The Light of the Soul, pages 77, 217-225, 280-282, 328-330, 332, the whole subject is considered.

Suffice it to say that:

1. There is nothing in manifestation except energy, taking form, using and actuating forms and dissipating forms.
2. This energy is divided into three types of so-called electrical phenomena, called in The Secret Doctrine and in A Treatise on Cosmic Fire, fire by friction, solar fire, and electrical fire. [328]
3. Prana is the name given to the energy which is drawn upon the physical plane from the etheric aspect of all phenomenal life. That etheric aspect of the divine energy is a synthesis of energies. If the energy in which an individual primarily lives and moves and has the focus of his being is, for instance, predominantly astral, then the major expression of energy in his equipment will be astral or emotional feeling energy. He will react all the time to physical energy or prana and to astral energy or the many sentient emotional forces. These work out pre-eminently through the spleen, the solar plexus and the throat, and affect in different ways the physical spleen, the stomach and the thyroid gland.
4. Interest in these two types of energy, when evidenced by an individual, is based on the fact that they are the two in which he himself is habitually immersed and to which he most easily and normally responds.
5. The current of energy used in healing will be a synthesis of the energies with which the healer normally works, with that type of energy predominating which is, for him, the paramount energy of his life. The average unintelligent healer is usually simply a transmitter of prana itself, which is the energy of the planet. This combines with the etheric physical energies of the patient, passing through the healer's body. These stimulate the patient sufficiently so that he is enabled to throw off the enfeebling disease. Some healers can work with that type of force and with emotional energy blended, and produce activity, therefore, not only in the patient's physical body but also in his astral body. This brings about serious difficulties at times and often hinders true physical healing, on account of the astral turmoil produced. On this matter, I cannot here enlarge, and there is no time for a longer elucidation at this time. [329] Mental healers (true mental healers who are rare indeed) blend soul energy with the two above mentioned forces and this produces a synthesis of the personality forces. Carried forward intelligently, this synthesis brings about the healing of the person through the production of definite organization and alignment.

Soul healing supersedes the three above mentioned methods, and produces the pouring into and through the mechanism of the patient of pure soul energy. It was in this way that Christ worked, and there are few today to work this way. It must be held before you, however, as an objective.