[19] The library of Pergamos was founded by King Eumenes, and enlarged by his successor Attalus. It soon became so extensive that the Ptolemies, afraid that it would speedily rival their own collection at Alexandria, issued an edict forbidding the exportation of papyrus; but this prohibition, so far from attaining the unworthy object for which it was destined, proved rather beneficial; for the Pergameans, having exhausted their stock of papyrus, set their wits to work, and invented parchment (_charta Pergamena_) as a substitute. [20] One of the most remarkable of these purchases was that made of the private library of the Prince Eugene, for a life-income of 10,000 florins. It was composed of 15,000 printed volumes, 337 manuscripts, 290 folio volumes of prints, and 215 portfolios or boxes. [21] For a detailed account of, and guide-book to, the treasures of this great national collection, see "The British Museum, Historical and Descriptive, with Numerous Engravings," recently published by W. & R. Chambers. THE JOURNALS OF LOUIS PHILIPPE. Our readers know that one of the points of the singular but admirable education that Madame de Genlis gave Louis Philippe and his brothers, was to teach them to examine and regulate their mind and conduct by the keeping of a journal; and this Louis Philippe has done, not, we suppose, continuously, nor even, perhaps, for the greater part of his busy life, but for particular periods--during seasons either of peculiar interest or of unusual leisure. A fragment of his early journal, extending from the autumn of 1790 to the summer of 1791, was lost or stolen in the tumults and pillage of the first Revolution, as the memoirs of 1815 have been in the late one, and like these, published by an illegitimate possessor. That most curious little tract had become very rare--so rare, indeed, that Louis Philippe himself had not a copy, till a friend of ours lately presented him the copy from which we ourselves had made a translation, which we published _in extenso_ in our article on "The Personal History of Louis Philippe." The King had also written and printed the "Journal of the Hundred Days," just mentioned; and we were permitted to see and make extracts in our last March number from his Journal of February and March, 1848. It is known, too, that during his residence at Claremont, as at former intervals of repose, he amused himself in recording his recollections; but no information has yet transpired of the extent (either as to bulk or time) of what he may have left--beyond the conjecture (which is, however, only founded on an accidental expression of his which was repeated to us some months ago) that the portion which he was so anxious to complete related to his return to France in 1814. * * But whatever Louis Philippe may have left, it will be curious and valuable, as the production of so powerful a mind, always engaged in, and for a long period actually directing, the