Now if ever there exists such a thing as a crucial test, this of the Army and Navy, as compared with Ireland, and especially with Leicester, affords such a test. The populations concerned are hundreds of thousands; the time extends to a generation; the statistical facts are clear and indisputable; while the case of the Army has been falsely alleged again and again to afford indisputable proof of the value of vaccination when performed on adults. It is important, therefore, to see how the Commissioners deal with these conclusive test-cases. They were appointed to discover the truth and to enlighten the public and the legislature, not merely to bring together huge masses of undigested facts. What they do is, to make no comparison whatever with any other fairly comparable populations, to show no perception of the crucial test they have to deal with, but to give the Army and Navy statistics separately, and as regards the Army piecemeal, and to make a few incredibly weak and unenlightening remarks. Thus, in par. 333, they say that, during the later years, as the whole force became more completely revaccinated, small-pox mortality _declined_. But they knew well that during the same period it declined over all England, Scotland, and Ireland, with no special revaccination, and most of all in unvaccinated Leicester! Then with regard to the heavy small-pox mortality of the wholly revaccinated and protected troops in Egypt, they say, “We are not aware what is the explanation of this.” And this is absolutely all they say about it! But they give a long paragraph to the Post Office officials, and make a great deal of _their_ alleged immunity. But in this case the numbers are smaller, the periods are less, and no statistics whatever are furnished except for the last four years! All the rest is an extract from a parliamentary speech by Sir Charles Dilke in 1883, stating some facts, furnished of course by the medical officers of the Post Office, and therefore not to be accepted as evidence.[18] This slurring over the damning evidence of the absolute inutility of the most thorough vaccination possible, afforded by the Army and Navy, is sufficient of itself to condemn the whole _Final Report_ of the majority of the Commissioners. It proves that they were either unable or unwilling to analyse carefully the vast mass of evidence brought before them, to separate mere beliefs and opinions from facts, and to discriminate between the statistics which represented those great “masses of national experience” to which Sir John Simon himself has appealed for a final verdict, and those of a more partial kind, which may be vitiated by the prepossessions of those who registered the facts. That they have not done this, but without any careful examination or comparison have declared that revaccinated communities have “exceptional advantages” which, as a matter of fact, the Report itself show they have _not_, utterly