We may regard it as a great stroke of fortune for the German nation that its period of lingering suffering was so suddenly curtailed and transformed into such a terrible catastrophe. For if things had gone on as they were the nation would have more slowly, but more surely, gone to ruin. The disease would have become chronic; whereas, in the acute form of the disaster, it at least showed itself clearly to the eyes of a considerable number of observers. It was not by accident that man conquered the black plague more easily than he conquered tuberculosis. The first appeared in terrifying waves of death that shook the whole of mankind, the other advances insidiously; the first induces terror, the other gradual indifference. The result is, however, that men opposed the first with all the energy they were capable of, whilst they try to