Todays manuscript is a composite one, containing texts from Boethius (Porphyrii Isagone; De Devisione), and Aristoteles (Categoriae vel Predicamenta); it was made by several scribes in the second half of the 13th century (or possibly the first half of the 14th century). It is assumed to have originated in England . Being kept in the Bibliothèque Municipale in Chambéry (France), there is one folio , f. 240, of interest here.
In the middle of the page, a stylised snail is shown, with a sinistral shell, two tentacles and an eye-spot. The object in front of the snail either seems to be unfinished or very schematic.
 BM Chambéry, Ms. 027, 316 ff. http://bit.ly/1hWdk4n (27.ii.2014).