concrete expression of the forces in the planet. This principle may give the electric form immortality, and, by reason of the eternal nature of the elements composing it, place it beyond the possibility of dissolution as long as the planetary relation of the elements exists. But with man it goes even further, for the spirit form, having the basic principles of eternal existence in its spiritual composition and having once entered upon organic life, has in itself immortality and the power of self-sustenance from the elements in space and cannot become disintegrated, for it has all the necessary material to keep it in eternal existence as an organism, though the planet should revert to its original status and vanish as a distinct form. This explanation of the nature of spirit gives us a logical ground for the rational consideration of the phenomenon that has been the basis of all the superstitions embalmed in the sacred and curious literature of past ages. That man and probably all types of life have a spiritual or electric counterpart is not a scientific speculation or hypothesis merely, but a logical sequence of the forms that enter into physical organization. Here in the secondary form, says the author of "Planetary Evolution," is an explanation of the nature of spirit that follows the same principles that construct the physical body and form the same material environments. And the questions of a spiritual life, apart from this principle of a secondary form, cannot be solved by any known formula of a scientific character. On the other hand, the existence of a form holding the powers of thought and action upon the plane of radiant matter gives a satisfactory explanation of the transference of the mental powers that belong to planetary life. The law of correlation and conservation of force prevent their annihilation, and they must exist somewhere. They are a spiritual entity, but should not be regarded as having a supernatural origin.