Parabolic compass.
Sforza horse (Cermonino).
20 silverpoint drawings of horses.
Sketch of sailboat. Weaving machine.
Pincers for hoisting heavy objects.
Sketch of windmill.
Planetary clock.
Parachute.
Birds in flight-30.
Man in flight.
Gliders.
Helicopter.
Insects.
Drawing of Ginevra Benci.
Crayon of Cecilia Gallerani.
Silverpoints of Boltraffio, Salai, Marco d'Oggiono, Francesco Melzi.
Head of Christ.
Disciples.
Series of Last Supper drawings.
Astronomy: distance of sun and earth.
Anatomy: 60 drawings-
Muscles of upper limbs,
muscles of legs,
muscles of back.
Bone structures,
veins.
Complete skeleton, skull, hands.
Studies of horses for Adoration of the Magi.
Preliminaries for Leda.
Studies for Anne.
Saint John.
Geologic studies.
Deluge drawings.
Chateaux drawings.
FIFTY YEARS OF WORK:
Hours of work
12,000 Sketches 20,000 400 Major Drawings 10,000 20 Easel Paintings 20,000 125 Treatises (still incomplete) 16,000 Murals (and their cartoons) 15,000 Bronzes 15,000 Dissections and Anatomy Studies 10,000 Engineering Projects (canals, locks, swamps) 20,000 Architecture, Music, Horology 10,000 Maps, Geometry 5,000 Geometry, Hydraulics 5,000
146,000
N.B. I have destroyed 188 drawings. I have retained several maps, and I may retain several drawings of people here at Amboise.