Most of the phenomena discussed by Dr Maxwell were obtained through the mediumship of Eusapia Paladino. He was a member of the committee which met in 1896 to investigate this medium, who had just concluded the series of performances held under the auspices of the society at Cambridge, which were entirely unfavourable to her claims. The French committee was made aware of the fraudulent devices which the Cambridge investigators claimed to have discovered. He recommends all who believe that Dr Hodgson and his Cambridge colleagues have had the last word in the controversy to read the report which will be found in the _Annales des Psychiques_, for 1896. The English sitters arrive at conclusions in direct conflict with those of the French, who claim that they had long known of the tricks "discovered" at Cambridge, and in consequence took means to guard against them. Dr Maxwell indicts the Cambridge way of controlling the medium, which he says consisted, for a time at least, in affording the medium opportunities to cheat to see if she would avail herself of them. Opportunities of which she took the fullest advantage. Nevertheless, Dr Maxwell offers but little encouragement for the theory of spiritualistic agency. "I believe," he says, "in the reality of certain phenomena, of which I have repeatedly been a witness. I do not consider it necessary to attribute them to a supernatural intervention of any kind, but am disposed to think that they are produced by some force existing within ourselves." In the same way as certain psychical phenomena, such as automatic writing, trance, "controls," crystal vision, and so forth, in which an intelligence seems to be present independent of the intelligence of the medium, can be shown beyond dispute to be merely manifestations of his subliminal intelligence, frequently taking the form of a dramatic personification; so may the agency, revealing itself in raps, movements of objects, and other phenomena of a physical character, perhaps be traceable, not to any power external to the medium and the sitters, but merely to a force latent within themselves, and may be an exteriorisation in a dynamic form, in a way not yet ascertained, of their collective subliminal capacities. However strange new and unknown facts may be, we need not fear they are going to destroy the truth of the old ones. Would the science of physics be overthrown if, for example, we admit the phenomenon of "raps"--_i.e._ audible vibrations in wood and other substances--is a real phenomenon, and that in certain cases there may be blows which cannot be explained by any mechanical force known to us? It would be a new force exercised on matter, but none the less would the old forces preserve their activity. Pressure, temperature, and the density of air or of wood might still exercise their usual influence, and it is even likely that the transmission of vibrations by this new force would follow the same laws as other vibrations.