Many commentaries have been made since then on this outbreak of Demonidolatry among the Ursulines. These we have no desire to reproduce nor to discuss, as it would only tend to show the ancient ignorance prevailing regarding diseases of the nervous system, and the want of character and weakness of the physicians of that epoch, together with the fanaticism of the monks and priesthood. One thing, however, appears to be worthy of remembrance; that is the analogy between the convulsive symptoms observed among the nuns and the phenomena of somnambulism described by Calmeil. This fact appears to us as so much the more remarkable, as the learned doctor of Charenton was a declared adversary of magnetism, and published his work almost half a century since—that is, in 1845. The sleep into which the nuns fell during the period of exorcism, the forgetfulness of the scenes witnessed where they had played such a _role_, are, to our mind, only phenomena of hypnotism, and the resemblance is so strong that we do not believe it would be impossible to artificially reproduce another epidemic of hysterical demonomania. Let us for an instant accept the _hypothesis_ of a convent, where twenty young nuns are confined. Of these at least ten will be subject to hypnotism. Let us now admit that these recluses, living the ordinary ascetic and virtuous life of the cloister, plunged deeply in the mysticisms of the Catholic faith, receive one day as confessor and spiritual director a man of energetic character, knowing all the practices of _hypnotism_ and of _suggestion_—a disciple let us say of Puel, Charcot, De Luys, Barety, Bernheim—a perfect neurologist. Now, if this man cared to magnetize individually each of these nuns in the silence and obscurity of the confessional, and should then suggest to them that they were _possessed_ by all the demons known to sorcery, what would occur? Let us suppose again that he should carry his physiological power further and put his _subjects_ into an ecstacy, catalepsy or lethargy—into a condition where marked hallucinations might occur and nervous excitation be provoked, how long would it be before this man could make these women similar to those who once lived in the convent of the Ursulines at Loudun? We have not admitted this fiction for the purpose of having any one conclude that the possessed of Loudun were the mere playthings of some person who used hypnotism in an interest that we ignore; but, if this fact may be considered possible by the will of an individual, who can affirm at this day that there does not exist an unknown force, intelligent or not, capable of producing the same pathological phenomena observed long ago? What we call, in 1888, hypnotism in the amphitheatres of our universities, we reserve for another chapter, where we will give revelations much more extraordinary, and also more supernatural; our chapter on the neurology of the nineteenth century will, we promise, be _very interesting_.