Much better results are obtainable by guarding women from the factors of degeneracy during puberty and during matronhood. Many nations whose laws ostentatiously regulate marriage in a manner most oppressive to individual liberty entail by their customs over-work in a spasmodic manner during puberty and during matronhood. Nations whose customs permit women and dogs to be harnessed together as beasts of burden, to carry the hod and to dig trenches for sewers, gas, and waterpipes, cry out very loudly against the dangerous license of the English-speaking nations in permitting women to intrude on male occupations. There is no doubt but that women (and it may be said a large majority of men) are now through evolution unsuited to occupations involving spasmodic expenditure of force, and well suited to those implying continuity. As Bachhofen, Reclus, and Otis T. Mason have shown, two-thirds of the occupations of this last type have been created by women. Man, as Havelock Ellis demonstrates, in accordance with the law of evolutionary advance, is adjusting himself to these occupations. Attempts to regulate employment of women in unhealthy trades are a step in the right direction so far as prevention of a factor of degeneracy is concerned, since it can be carried out without that disregard of personal liberty which is more dangerous in such attempts at regulation than the defect to be regulated. The periods of menstruation and pregnancy in degenerate women require (from what has been said on maternal impressions) special attention suited to the individual, and not prescribed indiscriminately for all classes. An excellent illustration of the dangers of Procrustean prescription is the instance where the vegetarianism of the mother during pregnancy was followed by the production of ill-nourished offspring. Diet during pregnancy undoubtedly can exercise a great influence for good, but this diet must ignore the "longings" of pregnant women, which are simply the bulimia, or abnormal appetite for food, produced by irritation of the medulla.