M. LAENNEC, agreed with M. DOUBLE, because after studying the subject for twenty years, he is satisfied, that it is almost nothing but deception and juggling; although, when he commenced the study, he was prejudiced in its favour. According to M. LAENNEC, among the magnetic influences, there are several, attributable to the impressions, which one individual naturally makes on another in correlation with him; and he cited a mistake, which he saw committed by a somnambulist woman. She was magnetised by two persons, one of whom was handsome, but anaphrodisiac, the other ugly, yet possessing in integrity, the genital faculties. She received no impression, except from the first individual; so that the impression which this female had received by the organs of vision, before the experiment, superseded that, which the pretended magnetic sense ought to have made on her. He thinks, the academy ought to _observe_ the magnetisers, but what he has seen, has convinced him, that nine-tenths of the facts in magnetism are supposititious. The phenomena effected by magnetism, and the oracles uttered by the somnambulist, vary with every magnetiser. MESMER excited convulsions; DESLIN effected crises, such as are seen in diseases. The somnambulists of Mr. DELEUZE, a learned man, are much better taught than those of PUYSEGUR, who is ignorant of the sciences, and finally, Mr. LAENNEC has seen a somnambulist under the direction of a pharmacien, who was quite distinguished, by the art with which she compounded the medicines, she recommended. The discussion was now adjourned to the next sitting. On the 24th of January, it was resumed. M. CHARDEL, bears witness to a reality of the magnetic phenomena, as he has witnessed them himself, in a case of what is called somnambulism. He dares not pronounce on the question of magnetism, as a therapeutical agent; but is disposed to think it ought, if ever, to be used with great reserve. Whether it consist of nervous phenomena of a particular order, or whether it be a product of the imagination, in either case, it deserves to be studied, &c. &c. M. RONCHOUX, thought the proposed examination would be impossible; for the magnetisers assert, that if one of the parties have a will opposed to that of the magnetiser, no phenomena can be produced. Their confessed inability to surmount any opposite will, seems to Mr. RONCHOUX, an invincible obstacle to any exploration to be attempted by a commission.