Cambridge, Magdalene College, Pepys 1207 Short title R. Baconis quaedam Century 15 Material Membr. Height × width 7 1/5 x 5 No. of leaves 77 Gatherings 1^12(+1*) 2(one) 3^16 4^12 5^12 6^8(8 canc.) 7^16. Cover Stamped binding: a roll consisting of square panels of ornament alternating with profile heads in medaillions facing l., one bareheaded, the second helmeted, the third in a sort of Phrygian cap. Type of writing In a very ugly and much contracted script. Lineation 34 lines. Printed catalogs C.M.A. 6777.58. | James, M.R., A Descriptive Catalogue of the Library of Samuel Pepys III (1923) 7-8. Source James (1923) Type of source cat. Source’s source insp. Work 1Title (ms.) Varia, inter quae: Work 2Author (ms.) Rogerius Bachon Author standard Roger Bacon Title (standard) De multiplicatione specierum Incipit Species multiplicata in medio aliunde vocatur similitudo agentis Folio no. 61b Rubric Rogerius Bachon de multiplicatione specierum (Title by Dee) Explicit ideo magis est actiua propter hoc quod est propinquior agenti. Colophon Expl. tract. Bacon de multipl. specierum.