As a general rule, every deep change in the _internal_ sensations is translated in an equivalent fashion into the cœnæsthesia and modifies the tone of feeling. Now the internal sensations are not representative, and this factor, of capital importance, has been forgotten by the intellectualists. Of this purely organic state, which afterwards becomes a state of feeling, and then an intellectual state, we shall later on find numerous examples in studying the genesis of the emotions; it is enough for the moment to note a few of them. Under the influence of haschisch, says Moreau (de Tours), who has studied it so well, “the feeling which is experienced is one of happiness. I mean by this a state which has nothing in common with purely sensual pleasure. It is not the pleasure of the glutton or the drunkard, but is much more comparable to the joy of the miser or that caused by good news.” I once knew well a man who for ten years constantly took haschisch in large doses; he withstood the drug better than might be expected, and finally died insane. I received his oral and written confidences, often to a greater extent than I desired. During this long period I have often noted his feeling of inexhaustible satisfaction, translated now and again into strange inventions or commonplace reflections, but in his opinion invaluable. At the epoch of puberty, when it follows its normal development, we know that there is a profound metamorphosis. Certain conditions, known or unknown, act on the organism and modify its state (first moment); translated into consciousness, these organic conditions give birth to a particular tone of feeling (second moment); this state of feeling produces corresponding representations (third moment). The representative element appears in the last place. Similar phenomena are produced under other conditions, in which the cœnæsthesia is modified by the state of the sexual organs (menstruation, pregnancy). The emotional state is produced first, the intellectual state afterwards. But the most abundant source from which we may draw examples at will is certainly the period of incubation which precedes the appearance of mental diseases. In most cases it is a state of vague sadness. Sadness without a cause, it is commonly said, and rightly, if by that is meant that it is produced neither by an accident nor by bad news nor by ordinary causes; but not causeless, if we take into consideration the internal sensations which in such a case play a part which is unperceived but not the less effective. This inclination to melancholy is also the rule in the neuroses. Sometimes it happens that the state of feeling, instead of being a slow incubation, is an _aura_ of emotional character and short duration (a few minutes to at most a few hours). Some patients, by repeated experience, are aware of this; they know by the change that the attack is approaching. Féré (_Les Epilepsies_) gives several examples; among others, that of a young man who under these