If I had to summarise the whole of modern psychological doctrines in one line I should quote the popular saying, “The wish is father to the thought.” The whole of our mental activity, our thoughts, actions, opinions, and dreams are moulded by wishes or innate tendencies of one kind or another. Often, of course, these conflict with one another; but that does not alter the principle involved. I believe that the great majority of the recognitions of spirit photographs are determined either by the definite wish to find evidence of survival or by the vaguer desire to obtain “positive” results of some kind, for positive results are always pleasanter and more satisfactory than negative. To attempt a full discussion of the psychological process of recognition in general would take us very far, but I think it may be conceded that it is based on some kind of a _comparison_ between the object (“extra”) actually perceived and a visual image of the person concerned which is evoked for the purpose. But visual images are very plastic, so to speak, as anyone who tries to visualise the face of a friend accurately will be able to verify for himself. The general impression may be clear enough, but details of proportion and the like are very elusive. We all know, too, how faces get distorted in dreams (though by somewhat different causes from those which we are considering here), and it may well be that it is for reasons of this kind that recognition is so often unreliable even in ordinary life. Which of us has not been struck by the likeness of a press photograph to someone whom we know, or who has not been momentarily misled by the slight resemblance of a passer-by to his contemporary inamorata? In my judgment it is entirely in conformity with modern psychological views, or, indeed, a necessary consequence of them, to suppose that the process of recognition is as subject to the influence of emotional wish-tendencies as are all the other mental processes which have been studied. This supposition is immensely strengthened by a consideration of the actual material dealt with. I have seen a good many spirit photographs, and I am sure that those who have seen more will agree with me that the number which are clear enough to be _capable of definite recognition at all_ is extremely small. They are almost invariably blurred, out-of-focus, indistinct things, frequently so covered in “spirit drapery” as to leave no more than two eyes, a nose and a mouth visible, while the shape of the head and the hair are quite indistinguishable. In the great majority of cases it seems to the unbiassed observer nothing short of absurd to claim that such vague and indefinite effigies can be “unmistakably” recognised. And when it comes to recognition being instantly claimed _from the negative_ and before a print is made--as in a case I heard of not long ago--one almost gives up hope!