In most cases complete proof of this complicated and cold-blooded kind is neither forthcoming nor is necessary: indeed it can hardly be appreciated or understood by non-studious people. Effective evidence is in most cases of a different kind, and varies with the personality concerned. It often happens that little personal touches, incommunicable to others in their full persuasiveness, sooner or later break down the last vestiges of legitimate scepticism. What goes on beyond that will depend upon personal training and interest. With many, anything like scientific inquiry lapses at this point, and communication resolves itself into emotional and domestic interchange of ordinary ideas. But in a few cases the desire to give new information is awakened; and when there is sufficient receptivity, and, what is very important, a competent and suitable Medium for anything beyond commonplace messages, instructive and general information may be forthcoming. An explanation or description of the methods of communication, for instance, as seen from their side; or some information concerning the manner of life there; and occasionally even some intelligent attempt to lessen human difficulties about religious conceptions, and to give larger ideas about the Universe as a whole,--all these attempts have been made. But they always insist that their information is but little greater than ours, and that they are still fallible gropers after truth,--of which they keenly feel the beauty and importance, but of which they realise the infinitude, and their own inadequacy of mental grasp, quite as clearly as we do here. These are what we call the 'unverifiable' communications; for we cannot bring them to book by subsequent terrestrial inquiry in the same way as we can test information concerning personal or mundane affairs. Information of the higher kind has often been received, but has seldom been published; and it is difficult to know what value to put upon it, or how far it is really trustworthy. I am inclined to think, however--with a growing number of serious students of the subject--that the time is getting ripe now for the production and discussion of material of this technically unverifiable kind; to be scrutinised and tested by internal consistency and inherent probability, in the same sort of way as travellers' tales have to be scrutinised and tested. But until humanity as a whole has taken the initial step, and shown itself willing to regard such communications as within the range of possibility, it may be unwise to venture far in this more ambitious direction.