XXII HERMANN VON HELMHOLTZ (From the Supplement to the Münchener Allgemeine Zeitung, August 31, 1891.) IN Germany the men who now stand upon the threshold of old age have inaugurated and lived through a period of rare felicity and success. They have seen aims attained and desires realised, and this not only in matters political: they have seen mighty developments in the arts of peace; they have seen our Fatherland take its place in the front rank of nations, not only in our own estimation but in that of others. Even in the beginning of this century the natural sciences were far from being neglected in Germany: the labours of a Humboldt, the undying fame of a Gauss, were sufficient to keep alive respect for German research. But side by side with the wheat of true effort there sprang up the tares of a false philosophy which flourished so luxuriantly as to hinder the full growth of the crop. Up to the middle of the century sober progress along the path of experimental investigation lacked the glory which accompanies international success; and the successes of a fictitious natural philosophy were very pro- perly not greeted with the same exultation abroad as in Ger- many. Germans followed eagerly and diligently the discoveries made in other lands; but they always expected the great dis- coveries and successes to come from Paris and London. Thither young investigators travelled to see famous scientific men and to learn how great investigations were carried on: thence they obtained the materials for their own researches; there alone could new discoveries be properly and authentically published. They found it hard to believe that things could ever be other-