These observations will not, however, satisfy the _want_ of your transatlantic correspondent so completely as I trust I am enabled, and shall be much pleased to do; for I have likewise the celebrated _counterfeit_, of which I have given an ample account in my forecited volume; and the _difference_ between it and the original is sensibly evident on a _synoptical comparison_. But other marks, where this is impracticable, may be adduced; and in the title itself, without depending upon the _minutiæ_ of punctuation, and without any reference to the _figures_ in the frontispiece, which are plainly not the same impression, in both copies, the last line, SVPERIORVM PERMISSV, which, in the _genuine_ book measures 2-1/2 inches, in the counterfeit measures 2-1/5; therefore, shorter by 3/10. In the _body_ of the work, in the counterfeit the letter-press occupies more space than the genuine. Taken at a venture (and a right-hand page is preferred, because the _number_ of the page, and the _catchword_, come in one perpendicular line), I examined p. 163. The _height_ in the genuine is 5-1/5 inches; in the counterfeit 5-4/5; the increase, 3/5. The _width_ of the page appears to be in proportion. In the _preliminary matter_ of the genuine copy the _De Correctione_ ends with the line, "eos corrigere, atque purgare." The counterfeit varies. The last unnumbered page, indeed, the terminating line, of what is prefatory, is, "Palatio Apostolico anno salutis 1607." The counterfeit here likewise varies. I have another volume closely identical; of which, because it is far from common, I will give the title entire. It is well known, but not easily detected: "INDEX LIBRORUM EXPURGANDORUM, _In quo_ Quinquaginta Authorum Libri præ cæteris desiderati emendantur. Per FRANC. JO. MARIAM BRASICHELLEN, Sacri Palatii Apostolici Magistrum in unum Corpus redactus, & publicæ Commoditati æditus EDITIO SECUNDA, Multorum desideriô juxta Exemplare Romanum Typis mandata. _SUPERIORUM PERMISSU._ Pedeponti vulgo STADT AM HOF Sumptibus JOANNIS GLASTL, Bibliopolæ Anno 1745."