_Electricity._--Many have tried to explain the movements of tables by electricity. Even supposing that they involve the very abundant production of this agent, no known effect of electricity would account for the movement of the tables. But, in fact, it is easy to show that there is no electricity produced; for, when a galvanometer was interposed in the chain, no deviation of the needle took place. The electrometer remains as indifferent to the solicitations of the tables as does the mariner's compass. _Nervo-magnetism._--There is certainly some analogy between several phenomena of nervo-magnetism and those of the tables. Those passes which seem to favor balancing without contact; the motion imparted by the chain to this man whom they cause to turn about (unless, indeed, there is in this some effect of the imagination); finally, the power that many mesmerizers exert over the tables--all this seems to indicate a kinship between the two orders of phenomena. But, since the laws of nervo-magnetism are little known, there is no conclusion to be drawn from this, and it seems to me preferable, for the present, to study separately the phenomena of tables, which are better adapted to the experiments of the physicist, and which, well studied, will render more service to nervo-magnetism than it could receive in a long time from this obscure branch of physiology. Thury next touches upon M. de Gasparin's theory of fluidic action. Being certain that he accurately understands this theory, he gives a resume of it in the following items: 1. A fluid is produced by the brain, and flows along the nerves. 2. This fluid can go beyond the limits of the body; it can be _emitted_. 3. Under the influence of the will, it can move hither and thither. 4. This fluid acts upon inert bodies; yet it shuns contact with certain substances, such as glass. 5. It lifts the parts toward which it moves, or in which it accumulates. 6. It further acts upon inert bodies by attraction or by repulsion, with a tendency to either join or separate the inert body and the organism. 7. It can also determine interior movements in matter, and give rise to noises. 8. This fluid is especially produced and developed by turning, and by the will, and by the joining of hands in a certain manner. 9. It is communicated from one person to another by vicinage or by contact. Yet certain persons impede its communication. 10. We have no knowledge of special movements of the fluid, which are determined by the will. 11. This fluid is probably identical with the nervous fluid and with the nervo-magnetic fluid. _Application._--Rotation is a resultant of the action of the fluid and of the resistances of the wood. Tipping results from the accumulation of the fluid in the leg of the table which is lifted.