If the account of fraudulent methods given above is referred to again, it will be seen that of the twenty-two varieties there noted, no less than eighteen depend on either (_a_) the use of the medium’s faked camera or slides, or (_b_) the fact that the plates are loaded into slides, the slides placed in the camera, the plates removed from the slides and also developed “on the premises.” The only methods to which this does not apply are the first of all and those involving preparation of the studio or dark-room and noted in Group II., Section A, to which might possibly be added the X-ray method. These three last can easily be eliminated by working in one’s own or a “neutral” studio, while the former eighteen could all be prevented by using the investigator’s own magazine or roll-film camera, loading it before the _séance_, taking it away immediately afterwards, and developing the plates in private without the medium. I may very well be wrong, there may very well be methods which I do not know and cannot imagine which would get round even this degree of control, but I am inclined to think that this procedure would be “fraud-proof.” Nothing less rigorous can be so, at any rate for a single-handed investigator, and even if several were present no confidence could be felt in the results unless (_a_) they were well versed in fraud, (_b_) they had planned and rehearsed everything in advance, (_c_) the medium were completely docile and willing to keep right away from the plates at the critical moments, and (_d_) the studio were known to be unprepared. I shall probably be told that the conditions mentioned above as being apparently fraud-proof would automatically inhibit the phenomena as would insistence on full light in the case of telekinesis. I am well aware that many attempts to lay down test conditions in the past have rightly met with this retort; but apart from the fact that _if_ the phenomena are such that real test conditions can never be applied then their genuineness can obviously never be established, I honestly cannot see that there is any essential difference between the conditions I suggest and those under which photographic phenomena _ostensibly_ take place. If and when these simple conditions are allowed (the plates being bought, of course, under circumstances which prevent collaboration by the vendor), I shall be prepared to admit that the scent is getting warm and that there may be something in spirit photographs after all. Until then I must reluctantly maintain my view that they are the most obviously fraudulent of all spiritualistic phenomena. * * * * *