PLATE 1. Birds in flight, 1505. Codex Sul Volo, folio 8r.

PLATE 2. Andrea del Verrocchio and Leonardo da Vinci, The Baptism of Christ, c. 1470–75. Uffizi Gallery, Florence.

PLATE 3. Study of the rotation of the arm, c. 1509–10. Windsor Collection, Anatomical Studies, folio 135v.

PLATE 4. Rotated views of the muscles of the shoulder and arm, c. 1509–10. Windsor Collection, Anatomical Studies, folio 141v.

PLATE 5. The Vitruvian Man, c. 1490. Galleria dell’Accademia, Venice.

PLATE 6. Star of Bethlehem, c. 1508. Windsor Collection, Landscapes, Plants, and Water Studies, folio 16r.

PLATE 7. Madonna and Child with Saint Anne, c. 1506–15. Musée du Louvre, Paris.

PLATE 8. Virgin of the Rocks, c. 1483–86. Musée du Louvre, Paris.

PLATE 9. The fetus in the womb, c. 1510–12. Windsor Collection, Anatomical Studies, folio 198r.

PLATE 10. The heart and its blood vessels, 1513. Windsor Collection, Anatomical Studies, folio 166v.

PLATE 11. Mona Lisa, also known as La Gioconda, c. 1503–15. Musée du Louvre, Paris.