There are few inquiries more interesting than one into the character and tendencies of an epoch, as ascertained by their reflection in its literature. Such an investigation, if referring to modern times and extended beyond a single country, must generally be incomplete on account of the great mass of the materials, which defies any exhibition of the literary tendencies prevailing at any given period over the whole of Europe. In the first age of printing alone the number of books is not absolutely unmanageable, and their bibliographical interest has ensured their accurate description in catalogues. It would not be beyond the power of industry to make a digest of the _incunabula_ of the fifteenth century, so far as to show the number of books printed in each country, their respective subjects, the frequency of reprints, the ratio of the various classes to each other, the proportion of Latin to vernacular books, and other particulars of this nature by which the intellectual currents of the age might be mapped out. The present essay is to be regarded as no more than a very imperfect indication of the feasibility of such an undertaking. Observations, sufficiently desultory, on the general character of the literature published in Italy, from the introduction of printing into the country to the end of the century, have suggested some remarks on the kind of books which the early Italian printers found it profitable to produce, and some inferences respecting the taste of the day, and the classes which would be reached by the printing-press. To afford a really satisfactory ground-work for such an inquiry, all known publications should be enumerated (although the briefest titles would serve), and tabulated according to their subjects. Deductions regarding the intellectual aspects of the time might then be made with some confidence, and the apparently dry and unpromising ground-work would admit of rich illustration from the stores of contemporary literary history. Any such fulness of treatment is, of course, as incompatible with the space available in _Bibliographica_ as with the time at the disposal of the writer. Enough, it is hoped, will have been done to show how interesting a detailed analysis of the subject might be made. The Roman and Venetian presses have been chiefly dwelt upon, inasmuch as these two cities, the first in Italy to possess printing-presses, also served to test the opposite systems of reliance upon patronage in high quarters, or upon the free life of a busy and prosperous community. The result is instructive, and has been confirmed by every similar experiment in later times.