Other evolutionists, in more recent times, have taken a still more somber view of this danger of race deterioration through the prevention of the full action of the law of natural selection. Dr. John Berry Haycraft, in a recent work entitled "Darwinism and Race Progress," has sounded the alarm in no uncertain tones. He says: "Races, therefore, subject to epidemics of a particular fever, suffer selections in the hands of the microbes of that fever, and those living are survivals, cast in the most resisting mould. It may not be flattering to our national vanity to look upon ourselves as the product of the selection of the micro-organism of measles, scarlet fever, smallpox, etc.; but the reasonableness of the conclusion seems to be forced upon us when we consider his immunity from these diseases as compared with the natives of the interior of Africa, or the wilds of America, whose races have never been so selected, and who, when attacked for the first time by these diseases, are ravaged almost to extinction. By exterminating these diseases we shall no doubt preserve countless lives to the community who will, in their turn, become race producers; but in as much as the individuals thus preserved will, in most cases, belong to the feebler and less resisting of the community, _the race will not become more robust_." The same author concludes in these words: "In the meantime we may view, and not without inquietude, the probability that our statistics, as far as they go, indicate that race deterioration has already begun as a consequence of that care for the individual which has characterized the efforts of modern society. The biologist, from quite another group of facts, has independently arrived at conclusions which render this view in the highest degree probable." "Thus, the great English race, once so hardy, so powerful," says this modern writer, "by hygiene and better physical conditions, is becoming weaker and weaker." This view of the case is growing largely in England and, perhaps, other European countries. There is already some evidence of its truthfulness in statistics. The death rate for those in middle life is rather increasing than diminishing. This arises from the fact that the great number of children who formerly died in infancy have lived, but being of more feeble constitutions, they swell the death rate later on. It is felt, also, in many educational institutions in the larger number of youths who cannot stand the strain and stress of student life. They are, high medical authority says, the youth saved from early death by modern hygienic and medical care. Formerly, natural selection would have chosen them as unfit to survive, and there would have remained alive few besides the hardy ones with good constitutions, capable of great strain, with great powers of endurance.