I had at one time a doubt, suggested by the language of the title-page, whether the _Compendium de Rerum Naturâ_ were not an abridgment of Campanella, by Adami himself. But the style has too much vigour and terseness to warrant this supposition. And the following passage in the preface leads us to a different conclusion: "De stylo, si tam delicatæ, ut nostratium nonnullæ sunt, aures reperiantur, quibus non ubique ita accuratus, _et ex scriptis mendosis interdum depravatus videatur_, supervacuum puto excusare, cum philosophus non loquatur, ut loquatur, sed ut intelligi velit." Your correspondent observes also: "What Mr. Hallam calls an 'edition,' was the first publication." Is not this rather hyper-critical? "First edition" is a familiar phrase, and Adam was surely an editor. In Vol. iii., p. 241., it is said that "in 1811 these MSS. (viz. of Wilkes) were, I presume, in the possession of Peter Elmsley, Principal of St. Alban's Hall, as he submitted the Junius Correspondence, through Mr. Hallam, to Serjeant Rough, who returned the letters to Mr. Hallam." And it is asked, "Where now are the original Junius letters, and where the other MSS.?" I have to answer to this, that I returned the Junius letters (I never had any others of Wilkes) to Mr. Elmsley some years before his death in 1825. They are, in all probability, in the possession of his representatives. HENRY HALLAM. PRINTING. (Vol. iv., p. 148.) More than a few of your contributors have, I trust, concurred with me in hoping, if not expecting, that something will be done to effect the object presented to our notice through M.'s most judicious suggestion. It will be admitted that now, for about thirty years, the study of the history of early printing has been commonly neglected, frequently despised. The extent of the advance or decline of any science in general estimation can always be accurately computed by means of a comparative view of the prices demanded at different periods for the works which treat of it; and it is unquestionable, that books on bibliography, which once were highly rated, have latterly become (at least to those who have them already) provokingly cheap. In fact, unless some measures be adopted to revive a taste for this important branch of learning, the next generation will be involved in decrepitude and darkness with respect to typographical antiquities.