In a manuscript of the Cotton collection in the British Museum is a work of some length upon astrology ascribed to Aristotle.[794] After a discussion of general principles in which the planets, signs, and houses are treated, there are separate books upon the subjects of nativities,[795] and of elections and interrogations.[796] In a Paris manuscript a treatise on interrogations is ascribed in a marginal heading to “Aristoteles Milesius, a Peripatetic physician.”[797] In the Cotton Manuscript in commentaries which then follow, and which are labelled as commentaries “upon the preceding treatise” Ptolemy is mentioned rather than Aristotle.[798] In an astrological manuscript of the fifteenth century at Grenoble written in French, works of Messahala and Zaël translated for Charles V of France are preceded by “a book of judicial astrology according to Aristotle,” which opens with “the preface of the last translator,” and is in four parts.[799] Perhaps both the above-mentioned manuscripts contain, like a third manuscript at Munich, “The book of judgments which is said by Albert in his _Speculum_ to be Aristotle’s.”[800] This work also occurs in a manuscript at Erfurt.[801] Roger Bacon was much impressed by an astrological treatise ascribed to Aristotle entitled _De impressionibus coelestibus_, and told Pope Clement IV that it was “superior to the entire philosophy of the Latins and can be translated by your order.”[802] [Sidenote: Aristotle and two hundred and fifty volumes of the Indians.]