In the following set of experiments, made by Dr. Ochorowicz, ex-Professor of Psychology and Natural Philosophy at the University of Lemberg, described in his book _La Suggestion mentale_ (pp. 69, 75, 76), there are not sufficient indications in most cases to enable a judgment to be formed as to the special form of sense-impression made on the percipient's mind. The percipient was a Madame D., 70 years of age. She had been shown to be amenable to hypnotism, but during these experiments she was in a normal condition. She is described as being of strong constitution and in good health; intelligent above the average, well read, and accustomed to literary work. The first experiments with Madame D. are not quoted here, not having been conducted, as Dr. Ochorowicz explains, under strict conditions. The objects thought of had been selected by the agent, instead of being taken haphazard, and the choice had frequently been directly suggested by his surroundings. It seemed possible, therefore, to explain the results as due to an unconscious association of ideas common to agent and percipient. Dr. Ochorowicz, however, has shown by his careful analysis of the experiments recorded in the earlier chapters of his book that he is fully aware of the risk of error from this and other causes, and in the series of the 2nd May and the following days he tells us that adequate precautions were taken. _An Object._ 36. A bust of M. N. | Portrait ... of a man ... a | bust. 37. A fan. | Something round. 38. A key. | Something made of lead ... | of bronze ... it is iron. 39. A hand holding a ring. | Something shining, a diamond | ... a ring. _A Taste._ 40. Acid. | Sweet. _A Diagram._ 41. A square. | Something irregular. 42. A circle. | A triangle ... a circle. _A Letter._ 43. M. | M. 44. D. | D. 45. J. | J. 46. B. | A, X, R, B. 47. O. | W, A; no, it is an O. 48. Jan. | J ... (go on!) Jan. _Third Series_, May 6th, 1885.--Twenty-five experiments were made, of which, unfortunately, I have kept no record, except of the three following, which impressed me most. (The subject had her back to us, held the pencil and _wrote_ whatever came into her head. We touched her back lightly, keeping our eyes fixed on the letters we had written.)