Experiments have on several occasions been made by amateurs, deliberately trying for spirit extras, and exposing scores of plates, usually without success. The unsuccessful attempts of Russell, Beattie, Dr. Williams, and more recently Dr. Pierce, have already been alluded to. Experiments of rather a different nature have been carried out by a Frenchman, Dr. Baraduc. His most interesting--if somewhat gruesome--result was a series of photographs taken over the death-bed of his wife, at the time of, and for some hours after, death. The negatives showed globes of light floating over the bed, which gradually increased in size and brightness, and coalesced in the later photographs. The circumstances certainly seem to exclude fraud, and it is very difficult to understand how the progressive series of photographs could have been obtained by accidental means, such as a pinhole in the camera. His results are very interesting, but need repeating by other experimenters; in any case, they have absolutely nothing in common with the conventional spirit photographs which show faces and figures. V.--THE FAIRY PHOTOGRAPHS (C. VINCENT PATRICK) The so-called “Fairy Photographs” recently published by Sir Arthur Conan Doyle and Mr. E. L. Gardner do not strictly come under the heading of “spirit photographs,” but may not inappropriately be considered here. We have no evidence of the conditions under which they were taken; as Sir Arthur explains, such “rare results must be obtained when and how they can.” We have therefore to learn what we can from an examination of the photographs, or of their reproductions. At first sight they look like genuine untouched photographs; their general appearance is excellent, and if frauds, they are certainly good ones. On examining them more carefully, however, a considerable number of points are found requiring explanation. Some of these have no doubt been noticed by different observers; the principal criticisms of the different photographs are these.