Labels:book | box | map | person | pole | poster | reckoner | sculpture | trade name | tree OCR: VATER Many of Leonardo's water inventions made use of PADDLE BOAT waterwheels, which date back to ancient Greece and Rome but were not widely used until the Middle Ages n Leonardo' paddle- powered boat the use of paddle wheels makes it both powerful and efficient. Because the rowers face forward, i1 would also be particularly easy to maneuver "Mechanical science is most noble and useful above all others, for by means of it all animated bodies in motion perform their operations. 1996 SoftKey Multimedia Inc. subsidiary of SoftKey International Inc eonardo 9661 subsidiar
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