Del Rosso's translation of Aristotle's On the Soul is dedicated to Francesco de Medici. Ms. Pal. 800 seems to be an autograph dedication copy. In the preface the author gives some interesting remarks on the method of translating.
Paper; mm. 270_220; ff. [I], 73, [2 blank], [I]. Beautiful copy, calligraphic though cursive hand; some additions and corrections. According to the catalogue the ms. is autograph by Del Rosso.