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35. The three Greek words are transliterated in Pliny the Elder’s Historia naturalis (Bk 36, ch.29), a book mentioned in all Leonardo’s book–lists.
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36. BN 2038 19v, R 654.
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37. BN 2038 21r, R 606.
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38. Leic 22v, cf. 30V; F 37V, from a text headed ‘Book 43: Of the movement of the air shut in beneath water’.
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39. RL 12665 (R 608–9). Cf. CA 215r/79r–c, 419r/155r–a (R 610–11), 302r/108v–b, all of c. 1515.
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40. G 6v.
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41. RL 12377–86 (Zöllner 2003, nos. 451–60) are a unified series; two others, RL 12376 (which relates to the note on G 6v) and RL 12387, are probably earlier.波帕姆称这一系列作品是“设计得极为抽象的实验，在欧洲到现在都几乎没有重复过……在这些素描中，科学家完全被淹没了：其内在的韵律感给列奥纳多规定了这些视觉的抽象形式” （Popham 1946, 95–6）。
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42. CA 671r/247v–b. The drafts of this letter are scattered among various folios, sometimes repetitious: see also CA 768r/283r–a, 500r/182v–c, 252r/92r–b, 1079v/ 389v–d (R 1351– 1353A).
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43. CA 213v/78v–b, R 855.
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44. See Part I n. 43.
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45. CA 429r/159r–c, R 1368A.
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46. ASF, Carte Strozziane I/io, 160r; Laurenza 2004, app. 2. 这是一份给朱利亚诺的佣人每月付款的时间表，时间大概是1515年4月至7月，这些付款与之前人们认为的这一年年底教宗前往博洛尼亚的款项无关。列奥纳多收到40杜卡特，其中33杜卡特归他自己所有，7杜卡特给“乔治·泰德斯科”。列奥纳多信中提到的“服装部的”吉安·尼科洛收到11杜卡特，朱利亚诺的秘书皮耶罗·阿丁格利收到6杜卡特。
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47. 乔瓦尼并非像过去人们常说的那样是一名助手：这封信说得更清晰，他是一名独立的大师，在贝尔韦代雷有单独的工作室。目前没有找到关于他的文献。
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48. G34r, R 885.
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49. CA 534v/199v–a. 这句漂亮的标语是反对模仿者的一场辩论的一部分；这段话以建议在“街头、广场和田间”写生开头。
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50. Ar 88r. Cf. Ar 73, 78, 84ff., all dated by Pedretti c. 1506–8.
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51. G 84V, in the context of parabolic mirrors for solar power. Calculations of the power produced are on the following page (G 85r).
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52. Pyramidical power–point: CA 1036av/371v–a; cf. CA 750r/277r–a, which gives dimensions of the pyramid (base with sides of 4 braccia = 8 feet or 2.4 metres). Astronomical use: Ar 279v, PC 2.135.
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53. G 75v: ‘ignea ’ written backwards.A similar tic of secrecy is in Ar 279–80, where material on the solar mirrors is misleadingly headed ‘perspectiva ’. These relate to the alleged snooping activities of Giovanni degli Specchi.
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54. RL 19102r, cf. 19101v, 19128r, etc.; on the later date of the notes see Laurenza 2004, 12–14. “那家”医院（CA 671r/247r–b）指的是圣斯皮里托医院，但他在罗马进行解剖手术的另一处可能的地址是卡皮托利欧的圣母玛利亚安慰教堂（Santa Maria della Consolazione）。
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55. 1513年12月教宗颁布诏书，谴责那些质疑灵魂永生的人是“令人生厌的、恶劣的异教徒”。蓬波纳齐被禁的著作是《论不朽的灵魂》（De immortalitate animae ）。 See G. di Napoli, L’immortalità dell’anima nel Rinascimento (Turin, 1963).
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56. C. Frommel, ‘Leonardo fratello della Confraternità della Pietà dei Fiorentini a Roma’, RV 20 (1964), 369–73.
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57. CA 179v/63v–a, R 769A.
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58. Landucci 1927, 205.
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59. CA 15r/3r–b.
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