3. The affective value of these analogies and their incorporation in poetry, song, and fiction as adequate figures of speech lead us to react to these traits in ways determined largely by the traditional usage. We are humble before the "high-brow," merry in the presence of the dimpled, cautious and prudent before him of the shifting eye. In so far as human reactions are determined by the implied expectations of associates and the demands of immediate circumstances, we should be surprised indeed if the "high-brow" did not, on the strength of his cranium, evade our office-door sentinel, the dimpled one respond to our facetious comment, and he of the shifting eye be forced to steal for a living. 4. Another source of these notions is mainly responsible for such of them as refer to definitely undesirable traits. This is the belief, so well played upon by the school of Lombroso in criminology, that many of these characteristics, along with the so-called physical stigmata, are indicative of a degenerative or atavistic trend in the constitution of the individual. Among these stigmata were enumerated every conceivable extreme variation of every identifiable part of the human anatomy. Lombroso was inclined to believe not only that the presence of such traits was a certain mark of criminal propensities, but even that various types of criminals could be recognized by the cataloging of their stigmata, as thieves, murderers, forgers, etc. The history of the criticism of this view need not be repeated here. Suffice it to say that we now understand that the underlying truth of the matter is only that these stigmata are somewhat more frequent among the vicious, degenerate, and defective groups than they are among people selected on the basis of their morality and intelligence. The criminally inclined individual may possess no stigmata, while an Abraham Lincoln may possess several of them, and in marked degree. To be sure, when an unusual number of stigmata are presented by an individual, we feel disposed to suspect that the abnormal condition is not confined to his bones and peripheral organs alone, but is probably so deep-seated as to involve his nervous system as well. But on the basis of these stigmata alone we are quite unable to decide whether he is an imbecile, a degenerate criminal, a pervert, a genius, or only an average man, with an undue burden of physical infirmity; still less can we diagnose his special mental or moral qualities.