(Quasi hodierni, of to-day). The aera of modern learning, according to the best chronologists, is that of the capture of Constantinople by the Turks, when the Greeks fled to Italy, carrying with them their literary treasures. This was on the 27th of May 145 3. This asra will not, however, be accurate in the history of medicine, for in tracing the progress of our science we have seen it gradually progressive from east to west, and sometimes even in a contrary direction; and were we to fix the limits with respect to medicine, we should place them at the decline of the Grecian physic, in the court of Byzantium, and the last of the ancients would be Actuarius. The comparative knowledge and skill of the ancients and moderns have occasioned great controversy. It is pleasantly, though not with great impartiality, treated by Swift in his Battle of the Books. Du-tens' work "On the Discourses of the Ancients attributed to the Moderns," contains many curious and important facts on this subject; but this author, like some others, catches too anxiously at casual hints, and expressions, seeming to mistake a lucky but a loose conjecture for a discovery. Pancirollus, in his work De Rebus Perditis et Inventis, and Baeckmann, in tory of Inventions, offer many curious facts respe the science of the ancients, and often respecting nu opinions and the use of remedies. Two volumes have been added by the latter author to those already translated, which would be a valuable acquisition to the English reader.