concerned, it seems to reach its objective more easily when the projection is unconscious, or is the result of mental disturbance. Some keen desire may send it forth on its way, and conduct it to its destination. As will be seen from the records of men who have made a practice of projection, their Doubles are often at the mercy of unknown forces, and of their own mental and vital impulses. The breath of a hurricane sweeps them away, or a rash attempt to attach themselves to an attractive scene sends them hurtling back into their bodies.
They will be dealt with later.
Of the others, our concern is directed to the evidence they are able to offer of the journeys they allege to have taken. This may be of two kinds: the Double may have been seen, felt or even spoken to, or it may be able to describe accurately the places it has visited, or the behaviour of people it has met.
If the visit has been paid to a Sensitive, the Double will always be seen, and clairvoyant powers are occasionally revealed to their unconscious possessor by his being the only one of a group by whom the Double is perceived.
As far as possible one prefers to rely on the owners of ordinary vision, because anything psychic is suspect by the ignorant; but this is difficult, since there are as many gradations in psychic vision as in ordinary sight, and it is, moreover, far more subject to fluctuations in its perspicacity.
Where, however, the Double is not seen, its presence may be felt; it may even be able to displace small articles or to turn the handle of a door.
Nor does its visibility depend always or altogether on the endowment of the viewer; there seems to be variety in the Etheric compound which may sometimes alter its apparent solidity, and even inhibit its passage through gross matter.