The sexual organs in women criminals very frequently reveal pathological conditions. Undescended testis has been frequently found by one of the medical officers who answered my Questions. Unusual size of penis by another. It is interesting to note in this connection that Drs. Bourneville and Sollier found exaggerated development of the glans penis extremely common among the idiots at the Bicêtre, and that among 728 individuals examined they found no fewer than 262 presenting anomalies of the sexual organs, an enormous proportion when compared with the ordinary population.[29] Ottolenghi believes that “on the whole anomalies of the genital organs have in sexual offenders no small diagnostic importance, especially when united to other characters which distinguish them from the honest and from criminals in general--as the greater frequency of fair hair, of malformed ears, of bichromatism of the iris, of blue eyes, of twisted noses, of facial asymmetry, of voluminous lower jaws, and of various neuroses, especially epilepsy.”[30] It may be noted here that Marro and Ottolenghi have recently studied metabolism in criminals. The chief point that comes out is an augmented elimination of phosphoric acid in the urine. The same has been observed in chronic alcoholism. These researches will, no doubt, be continued.[31] § 6. _Heredity._ The detailed study of criminal heredity and of criminal habit, or recidivism, scarcely forms part of criminal anthropology. It is an important branch of criminal sociology. But the facts of heredity form part of the evidence in favour of the reality of the criminal anthropologist’s conclusions, and it is not possible to ignore them here entirely. Moreover, the attitude of society towards the individual criminal and his peculiarities must be to some extent determined by our knowledge of criminal heredity. The hereditary character of crime, and the organic penalties of natural law, were recognised even in remote antiquity. They were involved in the old Hebrew conception, which seems to have played a vital part in Hebrew life, of a God who visited the sins of the parents upon the children unto the third and fourth generation. We know also the story in Aristotle of the man who, when his son dragged him by his hair to the door, exclaimed--“Enough, enough, my son; I did not drag my father beyond this.” And Plutarch puts the doctrine of heredity in a shape that is both ancient and modern--“That which is engendered is made of the very substance of the generating being, so that he bears in him something which is very justly punished or recompensed for him, for this something is he.” Or again--“There is between the generating being and the generated a sort of hidden identity, capable of justly committing the second to all the consequences of an action committed by the first.”