This is followed by a minute description of the emotions already enumerated, and their physical symptoms, for which I refer the reader to the work itself. If we generalise, we shall see that the phenomena described can be classed in two groups—(1) modifications of muscular innervation: it diminishes in fear or sorrow, but increases in joy, anger, impatience; (2) vaso-motor modifications: constriction in fear and sadness, dilatation in joy and anger. Are these two groups of equal importance?—are they both primary? or is one subordinated to the other? As far as the actual state of our knowledge permits us to answer the question, says Lange, the vascular changes must be assumed as primary, since the slightest circulatory variations profoundly modify the functions of the brain and spinal marrow. What is the significance of all this as regards the emotions? According to the current psychology, an emotional state subjected to analysis yields the following result:—(1) an intellectual state, perception, or idea, as a starting-point (_e.g._, a piece of bad news, a terrifying apparition, an injury received); (2) a state of feeling—the emotion: sorrow, anger, fear; (3) the organic states and movements resulting from this emotion. But the second point—the emotion conceived as such—is only an abstract entity, a mere hypothesis. Now, to be admissible, a hypothesis ought to explain all the facts and be necessary to their explanation. This is not the case here. We find, both in normal and in pathological life, emotions which are derived from no ideas, but, on the contrary, engender them: wine gives rise to joy, alcohol to courage; ipecacuanha causes a depression akin to fear, haschisch produces exaltation, and shower-baths calm it. Asylums are full of patients whose irritability, melancholy, and anguish are “causeless”—_i.e._, result from no perception or image. Here, we seize the true cause at its source; it lies in the physical influences. Let us therefore get rid of the useless hypothesis of a psychic entity called emotion, supposed to be intercalated between the perception or idea, and the physiological occurrences. Reversing the order admitted by common sense, we say: First an intellectual state, then organic and motor disturbances, and then the consciousness of these disturbances, which is the psychic state we call emotion.