<p style='text-align: justify;'>This manuscript is a collection of natural philosophy treatises by the philosopher <i>Aristotle</i>: On the Heavens, On Generation and Corruption, Meteorology, Generation of Animals, and On Colors (the last is sometimes ascribed to Theophrastus or Strato of Lampsacus).</p><p style='text-align: justify;'>The manuscript was copied by five early 14th-century scribes; a sixth hand (Hand F) intervened a century later, copying <a href='' onclick='store.loadPage(281);return false;'>ff. 140r-141r</a>, and has been identified as Demetrius Castrenus. Harlfinger 1977, p. 132-133 lists it in a group of Aristotelian manuscripts copied in Constantinople at the beginning of the 14th century, linked by the presence of the scribe who copied <a href='' onclick='store.loadPage(9);return false;'>ff. 4r-73v</a> (Hand B) in the CUL manuscript. The other manuscripts are: <div>Vatican City, Bibliotheca Apostolica Vaticana, Vaticanus gr. 253<br />Vat. gr. 258 (<a target='_blank' class='externalLink' href='https://digi.vatlib.it/view/MSS_Vat.gr.258.pt.1'>part 1</a> and <a target='_blank' class='externalLink' href='https://digi.vatlib.it/view/MSS_Vat.gr.258.pt.2'>part 2</a>), ff. 1r-18r, 157r and maybe 18v-68v<br />Vat. gr. 1950, ff. 280r-399r, 401r-404v, 408r-540v<br />and probably also Vat. gr. 92 and <a target='_blank' class='externalLink' href='https://digi.ub.uni-heidelberg.de/diglit/bav_pal_gr_260'> Pal. gr. 260</a><br /></div><br />Vat. gr. 258, furthermore, bears at f. 325v the monocondylon of Iohannes Bardales (PLP 2182, cf. RGK III 296), known as the correspondent of Maximus Planudes. It is therefore possible that Add. 1732 also comes from the same milieu.</p><p style='text-align: justify;'>There are traces of signatures in Greek numerals from α to λα, partially preserved and probably original to the production of the manuscript. Quires 15, 16 and 20 have another signature series for some supplementary purpose. On the basis of the partially preserved signatures, it seems reasonable to think that the original quire 15 (ιε) was replaced by the two quires now found in the manuscript: quires 15 (<a href='' onclick='store.loadPage(229);return false;'>ff. 114r-115v</a>) and 16 (<a href='' onclick='store.loadPage(233);return false;'>ff. 116r-123v</a>) bear the signature ιε in a different position from the other quires; quire 17 (<a href='' onclick='store.loadPage(249);return false;'>ff. 124r-131v</a>) has the signature ιϛ, consistent with the original series, and quires 16 and 17 also have a supplementary signature (α in red ink on <a href='' onclick='store.loadPage(233);return false;'>f. 116r</a> and β in black ink on <a href='' onclick='store.loadPage(264);return false;'>f. 131v</a>), to state the appropriate order after correction. Quire 19 (<a href='' onclick='store.loadPage(281);return false;'>ff. 140r-[143]v</a>, κ in the series of signatures) has been lost and Demetrius Castrenus has made up for the loss. Quire 20 (<a href='' onclick='store.loadPage(289);return false;'>ff. 144r-151v</a>) is marked as κα and bears a supplementary signature α.</p><p style='text-align: justify;'>The <a href='' onclick='store.loadPage(460);return false;'>last folio</a> contains three lines of a syllogistic scheme ascribed to Michael Psellus (11th century).</p><p style='text-align: justify;'>Dr Matteo Di Franco</p>
