museums and institutions:
museums and institutions:
Attributed works:
13. Drawing by Leonardo da Vinci, under Ultra-Violet Light. (Royal Library, Windsor Castle No.12285R). Reproduced by Gracious Permission of H. M. the Queen.
Attributed works:
14. Drawing by Leonardo da Vinci, under Ultra-Violet Light. (Royal Library, Windsor Castle No.12560R). Reproduced by Gracious Permission of H. M. the Queen.
Attributed works:
15. Drawing by Leonardo da Vinci, by Ordinary Photographic Processes (See Fig.13). (Royal Library, Windsor Castle No. 12285R). Reproduced by Gracious Permission of H. M. the Queen (Figs. 15-17, 19).
Attributed works:
16. Drawing by Leonardo da Vinci, under Ultra-Violet Light. (Royal Library, Windsor Castle No.12319R). Reproduced by Gracious Permission of H. M. the Queen (Figs. 15-17, 19).
Attributed works:
17. Drawing by Leonardo da Vinci, under Ultra-Violet Light. (Royal Library, Windsor Castle No. 12432V). Reproduced by Gracious Permission of H. M. the Queen (Figs. 15-17, 19).
Attributed works:
18. Detail from Drawing by Leonardo da Vinci (See Note to 12615R, Fig.26 and 12616R, Fig.27). (Musée du Louvre, No.2258V).
Attributed works:
19. Drawing by Leonardo da Vinci, under Ultra-Violet Light. (Royal Library, Windsor Castle No.12433R). Reproduced by Gracious Permission of H. M. the Queen (Figs. 15-17, 19).
Attributed works:
20. Drawing by Leonardo da Vinci, under Ultra-Violet Light. (Royal Library, Windsor Castle No. 12609R). Reproduced by Gracious Permission of H. M. the Queen.
Attributed works:
21. Drawing by Leonardo da Vinci, under Ultra-Violet Light. (Royal Library, Windsor Castle No.12609V). Reproduced by Gracious Permission of H. M. the Queen.
Attributed works:
22. Drawing by Leonardo da Vinci, under Ultra-Violet Light. (Royal Library, Windsor Castle No.12613R). Reproduced by Gracious Permission of H. M. the Queen.
Attributed works:
23. Drawing by Leonardo da Vinci, by Ordinary Photographic Processes (See Fig.22). (Royal Library, Windsor Castle No.12613R). Reproduced by Gracious Permission of H. M. the Queen.
Attributed works:
24. Drawing by Leonardo da Vinci, under Ultra-Violet Light. (Royal Library, Windsor Castle No.12608R). Reproduced by Gracious Permission of H. M. the Queen.
Attributed works:
25. Drawing by Leonardo da Vinci, under Ultra-Violet Light. (Royal Library, Windsor Castle No.12613V). Reproduced by Gracious Permission of H. M. the Queen.
Attributed works:
26. Drawing by Leonardo da Vinci, under Ultra-Violet Light. (Royal Library, Windsor Castle No.12615R). Reproduced by Gracious Permission of H. M. the Queen.
Attributed works:
27. Drawing by Leonardo da Vinci, under Ultra-Violet Light. (Royal Library, Windsor Castle No.12616R). Reproduced by Gracious Permission of H. M. the Queen.
Attributed works:
28. Drawing by Leonardo da Vinci, under Ultra-Violet Light. (Royal Library, Windsor Castle No. 12617R). Reproduced by Gracious Permission of H. M. the Queen.
Attributed works:
29. Drawing by Leonardo da Vinci, under Ultra-Violet Light. (Royal Library, Windsor Castle No. 12626R). Reproduced by Gracious Permission of H. M. the Queen.
Attributed works:
30. Drawing by Leonardo da Vinci, under Ultra-Violet Light. (Royal Library, Windsor Castle No. 12627R). Reproduced by Gracious Permission of H. M. the Queen.
Attributed works:
31. Drawing by Leonardo da Vinci, under Ultra-Violet Light. (Royal Library, Windsor Castle No. 12668R). Reproduced by Gracious Permission of H. M. the Queen.
Attributed works:
A. R. L. 12615 and 12616. Author's Tracing. [(cf. Figs. 26 and 27)]
Attributed works:
B. R. L. 12626. Author's Tracing. [(cf. Fig. 29)]
