Precisely the same process of decay is gradually removing the evidences of the historical labours of the writers of recent generations even now. The multiplication of books by the printing-press makes the process a trifle slower, perhaps; but it is no less sure. A goodly number of works that were famous half a century ago are now absolutely inaccessible to the would-be purchaser: the great book markets of Paris, Berlin, and London cannot secure or supply them. A few copies of these works are still extant in private collections and public libraries, but the fate of these is assured. Libraries are constructed to be burned. Some day a lick of flame will wipe out the last copy of any work issued only in a single edition, and the author will become thenceforth merely a name and a memory; or if, perchance, some latter-day Suidas or Stobæus has quoted a sentence from him, such sentence will be treasured in catalogues of fragments of eighteenth and nineteenth century historians. For many such an author, the present work may perform the function of Suidas or Stobæus, for a long list of these obsolescent writers will be found represented in our pages,--not always preserved for their antiquarian interest indeed, but quoted in regard to events concerning which their authority is still standard, and because it is believed that, in the cases selected, their treatment has not been excelled by any more recent performance; sometimes, on the other hand,--but more rarely,--quoted because of the quaintness of their diction, because of the archaic cast of thought through which they reflect the spirit of their times, or because of their sheer whimsicality. But while emphasising the catholicity of taste that judges matter on its own merits, excluding nothing simply because it is old, it must be emphasised also that in the main such selection leads to the inclusion of a preponderance of recent matter. Each generation builds upon the shoulders of the last, and the work, as a whole, is progressive. So we go not merely to the latest books, but also to the recent numbers of periodicals, the publications of learned societies and the like. And to put the cap-sheaf to modernity, the greatest living experts in each field have contributed original essays and characterisations expounding the latest developments. These contributions, in which master workers summarise the results of years of investigation, will be found not the least valuable part of our work.