We possess many works relating to the history of historiography, both special, dealing with individual authors, and more or less general, dealing with groups of authors (histories of historiography confined to one people and to a definite period, or altogether 'universal' histories). Not only have we bibliographical works and works of erudition, but criticism, some of it excellent, especially in the case of German scientific literature, ever the most vigilant of all in not leaving unexplored any nook or cranny of the dominion of knowledge. It cannot, therefore, form part of my design to treat the theme from its foundations: but I propose to make a sort of appendix or critical annotation to the collection of books and essays that I have read upon the argument. I will not say that these are all, or even that they are all those of any importance, but they ire certainly a considerable number. By means of this annotation I shall try to establish, on the one hand, in an exact manner and in conformity with the principles explained, the method of such a history, regarding which I observe that there still exist confusion and perplexity, even among the best, which lead to errors of judgment or at least of plan, and on the other hand I shall try to outline the principal periods in a summary manner, both with the view of exemplifying the method established, and, as it were, of illustrating historically the concepts exposed in the preceding theoretical pages, which might otherwise retain here and there something of an abstract appearance.