_P._ The atmospheres of other bodies than planets are not air or wind, but in their substances are so different from what you know as the atmospheres of planets as not to have anything specifically in common with them. The specific atmospheres of flowers, and when excited by friction, those also of some metals, and even of stone crystals, are often perceptible to the sense of smell, and are in that way distinguishable not only from the atmosphere of the earth, but also from the atmospheres of each other. But properly speaking, the psychic _aura_ surrounding man and spirits should no longer be called an atmosphere, that is, an _atom-sphere_ or sphere of atoms, but simply a "sphere;" for it is not atomic, that is, material, in its constitution, but is a spiritual substance, and as such extends indefinitely into space, or rather has only an indirect relation to space at all. Nor is the atmosphere, as popularly understood, the only enveloping sphere of the earth, for beyond and pervading it, and pervading also even all solid bodies, is a sublime interplanetary substance called "ether," the vehicle of light, and next approach to spiritual substance; while all bodies, solid, liquid, and gaseous, are also pervaded by electricity. _I._ All that is interesting, but the subject is new to me, and I would like to have some farther illustration. Can you cite me some familiar fact to prove that man is actually surrounded and pervaded by a sphere such as you describe? _P._ I can only say that you are at times conscious of the fact yourself, as all persons are who are possessed of an ordinary degree of psychic sensitiveness. Does not even the silent presence of certain persons, though entire strangers, affect you with an uncomfortable sense of repulsion, perhaps embarrassing your thoughts and speech, while in the presence of others you at once feel perfectly free, easy, at home, and experience even a marked and mysterious sense of congeniality? _I._ That is so; I have often noticed it, but never could account for it. _P._ Farther than this, have you not at times when free from external disturbances, with the mind in a revery of loose thoughts, noticed the abrupt intrusion of the thought of a person altogether out of the line of your previous meditations, and then observed that the same person would come bodily into your presence very shortly afterward? _I._ I have, frequently; the same phenomenon appears to have been noticed by others, and is so common an occurrence as to have given rise to the well-known slang proverb, "Speak of the devil and he will always appear." _P._ Just so; but still further: Have you not personally known of instances, or been credibly informed of them, in which mutually sympathizing friends of highly sensitive organizations were mysteriously and correctly impressed with each other's general conditions, even when long distances apart, and without any external communication?