Leonardo's Shadows

Leonardo da Vinci's art theory was compiled by a pupil, Franceso Melzi, in about 1540 into a celebrated Treatise on Painting, which explained perspective and shadows and numerous other techniques of art. It was widely read in later centuries. Digita Vaticana has just released a digitization of one of the manuscripts, Barb.lat.4304. Here is its explanation of the shadows seen on bodies at a distance:

Full background on the work and a comparison of the manuscripts can be found on the Treatise on Painting website at the Institute for Advanced Technology in the Humanities, University of Virginia.

Digita Vaticana has been fairly busy as the Roman summer hots up, issuing a total of 204 items on July 14 and 23. Because of my own holiday in Sweden (more from that later), I am getting in arrears, so I beg pardon that the following list is not fully annotated. There are lots of art gems in this release. Here is a nativity scene from the beautiful Barberini Book of Hours:

Below is the full list of 204 items issued on July 14 and 23. The Digita Vaticana index and catalog server is now frequently out of service (more than 80 hours offline July 23-26), so in the following list, most of the links are to the digitizations themselves, where the servers tend to be more stable.

1. Arch.Cap.S.Pietro.D.213,
2. Arch.Cap.S.Pietro.E.5,
3. Arch.Cap.S.Pietro.E.19,
4. Arch.Cap.S.Pietro.F.22,
5. Arch.Cap.S.Pietro.F.45,
6. Arch.Cap.S.Pietro.H.45,
7. Barb.gr.10, Donatus Aelius, Ars Grammatica Minor: Pinakes
8. Barb.gr.93, Homer's Odyssey (excerpts)
9. Barb.gr.102, Manuel Moschopulus: Schedographia: Pinakes
10. Barb.gr.176, Phrantzēs, Geōrgios, 1401-1477, Chronicon minus
11. Barb.gr.184, Nicephorus Gregoras, 1295-1359/1360, Byzantina historia
12. Barb.gr.192, Miscellanea de historia Byzantina
13. Barb.gr.206, Poussines, Pierre, 1609-1686, Commentarii in Pachymerae Andronicum
14. Barb.gr.212, Hippiatricorum corpus
15. Barb.gr.269, Asclepius Trallianus (6th century):In Aristotelis Metaphysicorum libros
16. Barb.gr.276, Emperor Maurice, Strategikon, and part of the Cesti of Julius Africanus; this is a section of a manuscript of which the other part is in Paris, BNF, gr. 2442
17. Barb.lat.168, Livy's Roman history Ab Urbe Condita, from the famed Corvinius Library of Hungary, illuminated initials
18. Barb.lat.370, Nicholas Trivet (Trevet), English writer and chronicler (c.1257 – c.1334),
    In Psalterium
19. Barb.lat.443, incl. Francois de Meyronnes, Passus super universalia (Glorieux)
20. Barb.lat.487, Barberini Book of Hours (use of Rouen): the reconstitution of another Rouen book of hours was a hot topic on the blogosphere this week with Lisa Fagin Davis. Read this online and savour the saving of 968 euros.
21. Barb.lat.3942, Ariosto's Orlando Furioso
22. Barb.lat.3984, Book of Virtues and Vices, illumination (examples below) by the Italian painter Master of the Dominican Effigies
23. Barb.lat.4086,
24. Barb.lat.4304,
25. Barb.lat.4357, 1542 Venetian atlas of portolan maps which belonged to Henry VIII of England (articles by Francesco Solinas and Peter Soustal ... and they are legible!
26. Barb.lat.5379, Confession of Pope Alexander VIII, purchaser of Queen Christina's library
27. Barb.or.18,
28. Barb.or.46 ,
29. Barb.or.155, Hebrew alphabet, Arabic astronomy and astrology, in mixed manuscript
30. Borg.cin.536,
31. Borg.ebr.9, Isaac b. Jacob Alfasi's Code with glosses
32. Borg.ill.12,
33. Borgh.206,
34. Borgh.220,
35. Cappon.127,
36. Cappon.163,
37. Cappon.172,
38. Cappon.176,
39. Cappon.181,
40. Cappon.186,
41. Cappon.193,
42. Cappon.195,
43. Cappon.197,
44. Cappon.200,
45. Cappon.204,
46. Cappon.207,
47. Cappon.209,
48. Cappon.210,
49. Cappon.218,
50. Cappon.219,
51. Cappon.220,
52. Cappon.221,
53. Cappon.225,
54. Cappon.228,
55. Cappon.233.pt.1,
56. Cappon.233.pt.2,
57. Cappon.234,
58. Cappon.235,
59. Cappon.240,
60. Cappon.243,
61. Cappon.253,
62. Cappon.255,
63. Cappon.258,
64. Cappon.259.pt.1,
65. Cappon.259.pt.2,
66. Cappon.260,
67. Cappon.284,
68. Cappon.287,
69. Cappon.296,
70. Cappon.313,
71. Chig.A.VII.220,
72. Chig.C.VI.163.pt.A,
73. Chig.G.IV.113,
74. Neofiti.3, Levi b. Gershom's Commentary on the Pentateuch
75. Neofiti.12, Aba Mari ben Mosheh ben Yosef Astruḳ, Minḥat ḳenaʼot, about 1400
76. Ott.gr.25, works of Nilus of Sinai
77. Ott.gr.39, works of Theodoret
78. Ott.gr.48.pt.1, works of Philo
79. Ott.gr.48.pt.2, ditto
80. Ott.gr.48.pt.3, ditto
81. Ott.gr.59, poets, misc. works, item by Methodius
82. Ott.gr.64, legal synopsis
83. Ott.gr.67, theological, mainly Philocalia of Origen
84. Ott.gr.69, speeches of Libanius
85. Ott.gr.73, Euthymii Zigabeni Panoplia dogmatica
86. Ott.gr.74, Theodori Heracleensis Commentarius in Psalmos
87. Ott.gr.76, John Chrysostom
88. Ott.gr.88, Lectionary
89. Ott.gr.90, Dio Chrysostom, Pinakes
90. Ott.gr.91, various authors, includes De laudibus Constantini
91. Ott.gr.94, Clement of Alexandria
92. Ott.gr.99, John of Cyprus, works
93. Ott.gr.100, Explicatio quorundam Evangelii locorum ex diversis Patribus
94. Ott.gr.107, John Chrysostom, homilies
95. Ott.gr.109, philosophical: Pinakes
96. Ott.gr.110, Almageste
97. Ott.gr.111, Epitome Historiae Romanae Cassii Dionis
98. Ott.gr.112, Tatian, Oratio Ad Graecos
99. Ott.gr.121, In Aristotelis Metaphysica
100. Ott.gr.124, Procopius Gazaeus, Catena In Canticum Canticorum
101. Ott.gr.127, Oecumenius Catena in acta apostolorum; Justinian, Letters
102. Ott.gr.128, Athanasius Alexandrinus
103. Ott.gr.133, Catena In Lucam
104. Ott.gr.134, ditto
105. Ott.gr.142,
106. Ott.gr.146,
107. Ott.gr.153,
108. Ott.gr.154,
109. Ott.gr.157.pt.B,
110. Ott.gr.158,
111. Ott.gr.159.pt.1,
112. Ott.gr.159.pt.2,
113. Ott.gr.160,
114. Ott.gr.161,
115. Ott.gr.167,
116. Ott.gr.170,
117. Ott.gr.172,
118. Ott.gr.173,
119. Ott.gr.175,
120. Ott.gr.176,
121. Ott.gr.177,
122. Ott.gr.178,
123. Ott.gr.180,
124. Ott.gr.182,
125. Ott.gr.188,
126. Ott.gr.192.pt.2,
127. Ott.gr.195,
128. Ott.gr.205,
129. Ott.gr.206,
130. Ott.gr.210,
131. Ott.gr.211,
132. Ott.gr.214,
133. Ott.gr.221,
134. Ott.gr.225,
135. Ott.gr.228,
136. Ott.gr.231,
137. Ott.gr.239,
138. Ott.gr.243,
139. Ott.gr.250,
140. Ott.gr.251,
141. Ott.gr.262,
142. Ott.gr.266,
143. Ott.gr.267,
144. Ott.gr.269,
145. Ott.gr.273,
146. Ott.gr.284,
147. Ott.gr.286,
148. Ott.gr.288,
149. Ott.gr.289,
150. Ott.gr.292,
151. Ott.gr.295,
152. Ott.gr.299,
153. Ott.gr.300,
154. Ott.gr.308,
155. Ott.gr.315,
156. Ott.gr.325,
157. Ott.gr.361,
158. Ott.gr.471,
159. Ott.lat.479,
160. Reg.lat.87.pt.1,
161. Reg.lat.267, uncial, probably from Fleury, includes work by Fulgentius (fl. late 5th century), Lowe CLA 1 104
162. Reg.lat.615, Heriger's Vita Sancti Remacli, probably copied under Heriger's direction, with word spacing and punctuation discussed by Paul Saenger in his book on silent reading
163. Reg.lat.960, Philip of France ...
164. Reg.lat.1283.pt.C, Fragmenta Sallustiana
165. Reg.lat.1858, Roman de la Rose
166. Ross.358, Hebrew: Two works by Jedaiah b. Abraham Bedersi
167. Ross.438, Hebrew: Maḥzor for the entire year, Roman rite
168. Ross.499, Hebrew prayers through year including fast days, Yom Kippur, etc.
169. Ross.532, Hebrew, work by Abraham Conat
170. Ross.533, David Kimhi, commentary on former and latter prophets
171. Ross.534, Mosheh ben Yaʿaḳov, Sefer mitsṿot gadol, about 1400
172. Ross.1167, scrapbook of illuminations cut from (music) manuscripts
173. Urb.lat.666, a fine Renaissance manuscript of the works of the late antique poet Prudentius, dated 1481 according to the catalog
174. Vat.ebr.7, fol.105r begins Leviticus. All Hebrew. Impressive size, clear to read, notes @TuomasLevanen on Twitter
175. Vat.ebr.117,
176. Vat.ebr.121, #Aramaic, part of the Babylonian Talmud (hat tip to @TuomasLevanen on Twitter)
177. Vat.ebr.614,
178. Vat.estr.or.58,
179. Vat.gr.681,
180. Vat.gr.1927, notable 12th-century Greek psalter with illuminations to most of the canticles
181. Vat.gr.2026,
182. Vat.lat.18, Vulgate Bible
183. Vat.lat.22, Vulgate Bible, Bolognese?
184. Vat.lat.25, Vulgate Bible
185. Vat.lat.26, Vulgate Bible, fine initials
186. Vat.lat.27, Vulgate Bible, 13th century, some initials
187. Vat.lat.33, Vulgate Bible, 13th-14th century, some initials
188. Vat.lat.35, Vulgate Bible, 14th century
189. Vat.lat.38, New Testament, 13th century
190. Vat.lat.44, Gospels, 12th century, with elegant version of canon tables
191. Vat.lat.52, study edition of Genesis, 13th century, with both marginal and interlinear glosses
192. Vat.lat.53, ditto
193. Vat.lat.61, study edition of Leviticus, Numbers, Deuteronomy, with glosses
194. Vat.lat.67, study edition of Joshua, Judges, Ruth etc. with glosses
195. Vat.lat.69, study edition of Kings, with glosses
196. Vat.lat.77, study edition of Job and Isaiah with glosses, 14th century
197. Vat.lat.86, Psalterium Galllicanum cum glossa ordinaria Walafridi Strabi et Anselmi Laudunensis glossa interlineari, 12th century 
198. Vat.lat.87, study edition of Psalms, glossed, 12th century
199. Vat.lat.99, study edition of Ecclesiasticus and parts of New Testament
200. Vat.lat.100, ditto, Proverbs etc.
201. Vat.lat.103, study edition of Isaiah, 12th century
202. Vat.lat.105, study edition of Isaiah, 13th century
203. Vat.lat.132, Gospel of Luke, study glosses
204. Vat.lat.3970.pt.2, more of the catalogue by Cardinal Sirleto (1514-85) following a part digitized in February

To finish, here are Moses receiving the Ten Commandments and Noah's Ark from Barb.lat.3984:

As always, if you can contribute or correct information, please use the comment box below. Follow me on Twitter (@JBPiggin) for more news on digitizations. [This is Piggin's Unofficial List 20.]