Galileo Galilei's Notes on motion

"The Codex 72 of the Galilean Collection (Collezione galileiana) in the Biblioteca Nazionale Centrale in Florence is a miscellaneous manuscript comprising 241 folios of various sizes, carrying folio numbers from 1 to 196. The first 32 folios of the codex contain several different writings not included in this electronic representation. The bulk of the manuscript (from folio 33r to folio 194r), which is covered by the electronic representation, holds drafts (texts, drawings and calculations) written by the hand of Galileo or of his disciples Mario Guiducci and Niccolo Arrighetti, mostly pertaining to the theorems on motion published in the Discorsi."