A clear distinction should always be drawn, in the consideration of morbid psychology, between habits which are the result of heredity and those which grow out of suggestion, imitation or contagion;1 for, while a good man rarely comes from a bad parentage, a bad man quite frequently comes from a good parentage.7
1 Broadly speaking, there are only two classes of criminals: First, criminals by occasion; and second, recidivists (Von Holder). Sexual crimes fall, quite naturally, under a similar classification; but the "sport" of acquisition always thrives best on the stalk of impure parentage. In nature there are few accidents. All phenomena are the effect of law, and sexual monsters are frequently only the product of exaggerated laws.
5 Vid. "La Contagion du Meurtre, etude Anthropologique Criminelle," Aubrey, Paris, 18S8, p. 184.
What I mean is that good parentage is no prophylactic against vicious contagion, our study of pathological sexuality having already shown us that epidemiology is equally as important an element in its causation as prenatal influence. JuristB, it seems to me, neglect a large portion of their field when they study law books instead of studying the criminal; for concrete crime, rather than points of law, constitutes by far the larger half of criminal procedure. In the anthropometrical examination suggested by Benelli, Tambourini and Lombroso, which includes craniometry, estbesiometry (sensibility to touch), algometry (sensibility to pain), dynamometry (manual skill), and anamnestic examination, which deals with the offender's family history, parentage, diseases, precedents of education, character and occupation, should be included, especially in the matters of sexual delinquencies, a strict psychical inquisition into perception (illusions), ideation (hallucinations), reasoning, will (impulse), memory, intelligence, work* (character of), slang, conscience, sentiments, affections, morality, religious belief, passions, instincts, etc.; with a careful reference to the history of sexual or other anomalies; and the jurist who fails to avail himself of such knowledge, through the skill of the physician, is but poorly equipped to pass judgment in the most trivial case, of a sexual character, coming before our courts.