When under any kind of noxious influences an organism becomes debilitated, its successors will not resemble the healthy, normal type of the species, with capacities for development, but will form a new sub-species, which, like all others, possesses the capacity of transmitting to its offspring, in a continuously increasing degree, its peculiarities, these being morbid deviations from the normal form--gaps in development, malformations and infirmities. That which distinguishes degeneracy from the formation of new species (phylogeny) is, that the morbid variation does not continuously subsist and propagate itself, like one that is healthy, but, fortunately, is soon rendered sterile, and after a few generations often dies out before it reaches the lowest grade of organic degradation.[6]
Degeneracy betrays itself among men in certain physical characteristics, which are denominated ‘stigmata,’ or brand-marks--an unfortunate term derived from a false idea, as if degeneracy were necessarily the consequence of a fault, and the indication of it a punishment. Such stigmata consist of deformities, multiple and stunted growths in the first line of asymmetry, the unequal development of the two halves of the face and cranium; then imperfection in the development of the external ear, which is conspicuous for its enormous size, or protrudes from the head, like a handle, and the lobe of which is either lacking or adhering to the head, and the helix of which is not involuted; further, squint-eyes, hare-lips, irregularities in the form and position of the teeth; pointed or flat palates, webbed or supernumerary fingers (syn-and polydactylia), etc. In the book from which I have quoted, Morel gives a list of the anatomical phenomena of degeneracy, which later observers have largely extended. In particular, Lombroso[7] has conspicuously broadened our knowledge of stigmata, but he apportions them merely to his ‘born criminals’--a limitation which from the very scientific standpoint of Lombroso himself cannot be justified, his ‘born criminals’ being nothing but a subdivision of degenerates. Féré[8] expresses this very emphatically when he says, ‘Vice, crime and madness are only distinguished from each other by social prejudices.’