Volume 6

Opera hactenus inedita Rogeri Baconi ... / edidit Robert Steele.

  • Bacon, Roger, 1214?-1294.
Date:
[1909]-1941
Catalogue details

Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Credit: Opera hactenus inedita Rogeri Baconi ... / edidit Robert Steele. Source: Wellcome Collection.

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    p. 29, 1. 25. Ysidorus. The reason for the wrong reference maybe that Bacon used the earliest form of Arabie numerals where a figure resembling 8 is used for Arabie 5, the Arabie 6 resembles the al- gorismic 5, and the sign used for 7 means Arabie 4. These numerals are used and glossed (incorrectly) in the Bodley MS. of Abraham ben Ezra (loc. cit.). They may account for several errors in transcription. p. 40,1. 34. See above note. p. 49,1. 1. This chapter and part of cap. 17, p. 72 are taken from an unidentified work De presagiis tempestatum, quoted by Vincent of Beauvais, Spec. Nat. 1. xv, c. vi and xii (ce. 1097, noo, ed. 1624), and Alkindi, De mutationibus temporis, c. 5, has passages corresponding. p. 55, 1. 28. The list of these is given by Ben Ezra (loc. cit. f. 53). ‘ Oui fecerunt multas etiam tabulas, que omnes Tabule Probationum dicuntur. Eorum Almarondizi et Abnavimunzor fuerunt; quorum contemporaneus Zebit ben Chore Christianus philosophorum summus fuerit. Post hos Anarizi philosophus Saracenus et Azoplii et Albatheni et Avenjunez et Beni Sethir, et Azerchel Hispanus.’ p. 58, 1. 32. The maximum and minimum lunar months are given as 29 days 20 hrs. and 29 days 6 hours 30 minutes. p. 70,1. 31. The quotations are to be found in Tractatus Secundus, c. xiii, of the Venice edition, 1493. The ‘ alia translatio ’ is that printed first in this edition: the text version is not yet printed. p. 84,1. 24. quodam auctore. This is a confusion with the era of Nabonassar, beginning Wednesday Feb. 26, 747 B. C. 1. 33. The reading may be ‘ ad Ptollophanem ’ J., or ‘ ad Apollopha- nem ’ A. This letter I have not traced. p. 85, 1. 4. The death of Alexander is put at Nov. 12, 324 B. C. 1. 18. The error 27 for 12 is probably due to the reason given above. p. 94, 1. 25. See note on p. 18,1. 24. p. iii,1.8. The first indiction is computed from September 1, 312 A.D. p. 112, 1. 25. The Roman (pontifical) indiction began at Christmas or Jan. I. The Imperial or Bedan indiction on Sept. 24, the French official in October. p. 119, 1. 16. Ypolitus. This is only true of the idea of making a cycle (see Introduction, p. x). 1. 26. ex decreto. (See Introduction, pp. x, xi.) p. 120,1. 14. xiiima should be xiiiima. p. 147, 1. 15. fundacionis kalendarii, 630 A-D. There does not seem to be any foundation for this assumption. See 167. 15- p. 156. 1. 33. For predictorum read preteritorum. p. 159, 1. 35. Paris is 6° 20' east of Toledo. Its latitude is nearly correct. p. 185. The origin of this table is uncertain. It appears among