Note 495 — Chapter I · GALILEO AT SIENA AND ARCETRI.
G. (George) Sturge translation
Op. x. pp. 94-96. In Albèri the date of this letter is wrongly given as 1635; Pieralisi has found the original of it in the Barberiana, with date 5th Dec., 1634. (Pieralisi, pp. 304-310.)