The next passage that calls for special notice here is par. 342, where they say, “We find that particular classes within the community, amongst whom revaccination has prevailed to an exceptional degree, have exhibited a position of quite exceptional advantage in relation to small-pox, although these classes have in many cases been subject to exceptional risk of contagion.” It seems almost incredible that such a statement as this could be made as a conclusion from the official evidence before the Commissioners, and it can only be explained by the fact that they never made the simplest and most obvious comparisons, and that they laid more stress on bad statistics than on good ones. They trust, for example, to the cases of nurses in hospitals,[19] as to which there are absolutely no _statistics_ in the proper sense of the term, only verbal statements by various medical men, and they overlook or forget the largest and only trustworthy body of statistics existing as to revaccination—that of the Army and Navy! “A position of quite exceptional advantage!!” When the small-pox mortality of more than 200,000 men, all revaccinated to the completest extent possible by the medical officials, shows _no advantage whatever_ over the whole comparable population of Ireland, and a quite exceptional _disadvantage_ in comparison with almost unvaccinated Leicester![20] There is only one charitable explanation of such a “finding” as this—namely, that the Commissioners were by education and experience wholly incompetent to deal intelligently with those great masses of national statistics which alone can furnish conclusive evidence on this question.