[ [29] See, for instance, A.F. Tredgold, Mental Deficiency, 1908.
[30] The investigation of Bezzola showing that the maxima in the conception of idiots occur at carnival time, and especially at the vintage, has been held (especially by Forel) to indicate that alcoholism of the parents at conception causes idiocy in the offspring. It may be so. But it may also be that the licence of these periods enables the defective members of the community to secure an amount of sexual activity which they would be debarred from under normal conditions. In that case the alcoholism would merely liberate, and not create, the idiocy-producing mechanism.
[31] Godden, Eugenics Review, April, 1911.
[32] Feeble-mindedness and the other allied variations are not always exactly repeated in inheritance. They may be transmuted in passing from father to son, an epileptic father, for instance, having a feeble-minded child. These relationships of feeble-mindedness have been clearly brought out in an important investigation by Davenport and Weeks (Journal of Nervous and Mental Disease, November, 1911), who have for the first time succeeded in obtaining a large number of really thorough and precise pedigrees of such cases.
[33] It may be as well to point out once more that the possibility of such limited depreciation must not be construed into the statement that there has been any general "degeneration of the race." It maybe added that the notion that the golden age lay in the past, and that our own age is degenerate is not confined to a few biometricians of to-day; it has commended itself to uncritical minds in all ages, even the greatest, as far back as we can go. Montesquieu referred to this common notion (and attempted to explain it) in his Pensées Diverses: "Men have such a bad opinion of themselves," he adds, "that they have believed not only that their minds and souls were degenerate, but even their bodies, and that they were not so tall as the men of previous ages." It is thus quite logically that we arrive at the belief that when mankind first appeared, "there were giants on the earth in those days," and that Adam lived to the age of nine hundred and thirty. Evidently no syndromes of degenerescence there!
[34] The Superintendent of a large State School for delinquent girls in America (as quoted in the Chicago Vice Commission's Report on The Social Evil in Chicago, p. 229) says: "The girls who come to us possessed of normal brain power, or not infected with venereal disease, we look upon as a prize indeed, and we seldom fail to make a woman worth while of a really normal girl, whatever her environment has been. But we have failed in numberless cases where the environment has been all right, but the girl was born wrong."
[35] See e.g. Havelock Ellis, The Criminal, 4th ed., 1910, chap IV.
[36] R.L. Dugdale, The Jukes, 4th ed., 1910. It is noteworthy that Dugdale, who wrote nearly forty years ago, was concerned to prove the influence of bad environment rather than of bad heredity. At that time the significance of heredity was scarcely yet conceived. It remains true, however, that bad heredity and bad environment constantly work together for evil.
[37] Jörger, Archiv für Rassen-und Gesellschafts-Biologie, 1905, p. 294. Criminal families are also recorded by Aubry, La Contagion du Meutre.
[38] Even during school life this burden is serious. Mr. Bodey, Inspector of Schools, states that the defective school child costs three times as much as the ordinary school child.