Jean Paul Richter 
Literary Works of Leonardo Da Vinci [PDF ebook] 
Compiled and Edited From the Original Manuscripts

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. The ship’s log of Vitruvius, of Alberti and of Leonardo Methods of staying and moving in waters — On naval warfare (1115. — The use of swimming belts — On the gravity of water — Diving apparatus and skating (1119 — On flying-machines (1122 — On mining — On Greek fire — Ou music (1129.