The old English physician, Charles Bell,[72] is of the opinion, in his cautious way, that what is called the external sign of passion is only the accompanying phenomenon of that spontaneous movement required by the structure, or better, by the situation of the body. Later this was demonstrated by Darwin and his friends to be the indubitable starting point of all gesticulation:--so, for example, the defensive action upon hearing something disgusting, the clenching of the fists in anger; or among wild animals, the baring of the teeth, or the bull’s dropping of the head, etc. In the course of time the various forms of action became largely unintelligible and significatory only after long experience. It became, moreover, differently differentiated with each individual, and hence still more difficult to understand. How far this differentiation may go when it has endured generation after generation and is at last crystallized into a set type, is well known; just as by training the muscles of porters, tumblers or fencers develop in each individual, so the muscles develop in those portions of our body most animated by the mind--in our face and hands, especially, have there occurred through the centuries fixed expressions or types of movement. This has led to the observations of common-sense which speak of raw, animal, passionate or modest faces, and of ordinary, nervous, or spiritual hands; but it has also led to the scientific interpretation of these phenomena which afterwards went shipwreck in the form of Lombroso’s “criminal stigmata,” inasmuch as an overhasty theory has been built on barren, unexperienced, and unstudied material. The notion of criminal stigmata is, however, in no sense new, and Lombroso has not invented it; according to an incidental remark of Kant in his “Menschenkunde,” the first who tried scientifically to interpret these otherwise ancient observations was the German J. B. Friedreich,[73] who says expressly that determinate somatic pathological phenomena may be shown to occur with certain moral perversions. It has been observed with approximate clearness in several types of cases. So, for example, incendiarism occurs in the case of abnormal sexual conditions; poisoning also springs from abnormal sexual impulses; drowning is the consequence of oversatiated drink mania, etc. Modern psychopathology knows nothing additional concerning these marvels; and similar matters which are spoken of nowadays again, have shown themselves incapable of demonstration. But that there are phenomena so related, and that their number is continually increasing under exact observations, is not open to doubt.[74] If we stop with the phenomena of daily life and keep in mind the ever-cited fact that everybody recognizes at a glance the old hunter, the retired officer, the actor, the aristocratic lady, etc., we may go still further: the more trained observers can recognize the merchant, the official, the