Goslings by J.D. Beresford

The next morning all London was reading a heavily-leaded article by Jasper Thrale. It appeared first in the Daily Post, with the announcement that it was not copyright, and all the evening papers took it up, and some of them reprinted it in its entirety.

The article began by pointing out that in the recent history of civilization Europe had been subject to a long succession of pestilences. From the fourteenth to the seventeenth centuries, wrote Thrale, the Black Death, now commonly supposed to be a form of the bubonic plague, was practically endemic in England. In more recent times small-pox had been responsible for enormous mortality among all classes, and, in our own day, tuberculosis. In the two former examples, Thrale pointed out, and in many other diseases, infectious or contagious, or both, these pestilences had gradually lost virulence. By the elimination of those most susceptible to infection and incapable to resist the onslaught of the disease, and by the survival of those whose vitality was strong enough either to resist attack or to achieve recovery, mankind at last were gradually becoming immune against certain infections which had prevailed in the past. And in a greater or less degree this immunity was without doubt being obtained against a whole host of lesser ills. This comparative immunity, in fact, was one of the means of man's evolution towards a more perfect physical body.