One of the Commission’s official witnesses, Dr. MacCabe, Medical Commissioner for Ireland, distinctly affirms this. He says (2nd Report, Q. 3,073) that he formerly had charge of the Dublin district, and that “out of a population of a quarter of a million, 100,000 live in tenement-houses, that is to say, houses that are let out in single rooms for the accommodation of a family. It is amongst that class, to a very great extent, that the defaulters exist. The relieving officer, when he goes to the tenement-dwelling where the birth occurred, finds that the parents have gone to some other tenement-dwelling and there is no trace of them.... A great number of these defaulters occur in this way.” Now weekly tenants do not live in the best and most sanitary parts of towns, and the records of every epidemic show that such insanitary districts have an enormously greater proportion of the small-pox deaths than the healthier districts. Yet the Commissioners declare that there is “absolutely no difference between the vaccinated and the unvaccinated” except in respect of vaccination. Again we stand amazed at a statement so contrary to the fact. But the Commissioners must of course have believed it to be true, or they would not put it in their _Final Report_, upon which legislation may be founded affecting the liberties and the lives of their fellow countrymen. I submit to my readers with confidence that this statement, so directly opposed to the clearest and simplest facts and to the evidence of official witnesses, proves the incapacity of the Commissioners for the important inquiry they have undertaken. By their treatment of this part of the subject they exhibit themselves as either ignorant or careless, in either case as thoroughly incompetent.