¹ For earlier Latin poems on that subject: Manitius, Max, Geschichte der lateinischen Literatur des Mittelalters II (Munich 1923) 574, 688, 693. The Massa compoti of Alexander of Villa Dei was edited from an early-13th-century MS of the British Museum, Egerton 2261, by Robert Steele, together with the Compotus of Roger Bacon in Opera hactenus inedita Rogeri Baconi VI (ed. Steele, , Oxford 1926) 268-83. This volume, in which the Compotus of Roger Bacon occupies pp. 1-198, and that of Robert Grosseteste, pp. 212-67, will henceforth be cited as OHI VI.Google Scholar

² Venice, St. Mark's, MS fondo antico 532 (Valentinelli XIV 8), 13th century, fols. 1-43.Google Scholar

³ Ibid. fol. 43.Google Scholar

⁴ Paris, BN, MS latin 14070, fols 92^r-96^r: ‘Cautelae diversorum numerorum,’ in verse and prose.Google Scholar

⁵ Oxford, Bodleian, MS Ashmole 191-II, fol. 143^r .Google Scholar

⁶ British Museum, Cotton MS Vespasian E.VII, fol. 22(25)^r .Google Scholar

⁷ Stanley Jevons, W., Elementary Lessons in Logic (new ed. London-New York 1889) 144–5, wrote: ‘In order to facilitate the recollection of the nineteen valid and useful moods of the syllogism, logicians invented, at least six centuries ago, a most curious system of artificial words, combined into mnemonic verses, which may be readily committed to memory. This device, however ingenious, is of a barbarous and wholly unscientific character; but a knowledge of its construction and use is still expected from the student of logic, and the verses are therefore given and explained below.' Google Scholar

⁸ MS Geneva 82 (151), fol. 56^r; the poem goes on to fol. 61^v .Google Scholar

⁹ British Museum, Arundel MS 66 (de luxe for Henry VII), fols. 288^r-290^va. Robert died before 1181, and his tomb had the epitaph, ‘Robertus cognomento Scriba quartus prior.’ The Dictionary of National Biography (16.1254) says that he owed his name of Scriba to his many writings. At fol. 290^vb our MS adds these verses: Google Scholar

They also are found in MS Cotton Vespasian E. VII, fol. 134(137)^v.

¹⁰ Cap. 2 (in Thorndike, Lynn, The Sphere of Sacrobosco and its Commentators [Chicago 1949] 88). Similar lines occur in the Massa compoti of Alexander of Villa Dei: Google Scholar

¹¹ The Sphere of Sacrobosco 91.Google Scholar

¹² Ibid. 99. — In the Massa compoti line 119 reads: Google Scholar

[For another occurrence see the text, presumably a commentary on Lucan, edited infra, p. 405 by Martin, J. — Edd.]Google Scholar

¹³ The Sphere of Sacrobosco 103.Google Scholar

¹⁴ Ibid. 167.Google Scholar

¹⁵ The reading ‘Latonem’ seems required to rhyme with ‘Errigonem.' Google Scholar

¹⁶ The Sphere of Sacrobosco 170.Google Scholar

¹⁷ Ibid. Google Scholar

¹⁸ Ibid. 422.Google Scholar

¹⁹ Ibid. 429.Google Scholar

²⁰ Halliwell, J. O., Rara arithmetica (2nd ed. London 1841) 11.Google Scholar

²¹ I have used editions of Paris, 1543 and Antwerp, 1547 for the Computus, adopting in each case what seems the preferable reading. I omit those passages which have already been quoted from the Sphere; and do not cite pages, since these are unnumbered.Google Scholar

²² OHI VI 269. Google Scholar

²³ OHI VI 272, lines 106-7.Google Scholar

²⁴ OHI VI 224: ‘Et propter facilitatem memorie ponunt compotiste versus istos ad retinendum primas litteras mensium,' Google Scholar

²⁵ Grosseteste, OHI VI 257, has a very similar wording: Google Scholar

Roger Bacon, OHI VI 125, omits the first line, then has:

²⁶ See OHI VI 125, 127, 257-8, 269-70 for the passages in question.Google Scholar

²⁷ OHI VI 268.Google Scholar

²⁸ OHI VI 220.Google Scholar

²⁹ OHI VI 271, lines 63-7. Roger Bacon made no quotation.Google Scholar

³⁰ OHI VI 105, 221, 271.Google Scholar

³¹ OHI VI 221. Google Scholar

³² OHI VI 105, 271.Google Scholar

³³ OHI VI 273: Sequitur de diebus Egyptiacis: Google Scholar

Quota sit hora contraria Egyptiaci diei:

³⁴ MS Vat. Palat. lat. 1367, fol. 15a^ra–^b: ‘Dies Egiptiacas invenire. Scias quod unaqueque dictio istius versus deservit uni mensi: Google Scholar

De horis eiusdem scias quod unaqueque dictio istius versus deservit uni mensi:

For the full text of Pheffer Kuchel see pp. 234-8 of my article, ‘Computus,’ Speculum 29 (1954) 223–38.Google Scholar

³⁵ OHI VI 277; also 230, footnote.’ Google Scholar

³⁶ But less correctly: see OHI VI 231 note.Google Scholar

³⁷ Also quoted in the Massa compoti, lines 258-60 (OHI VI 279), while Roger Bacon (OHI VI 28) has the slightly different version: Google Scholar

John of Gaddesden, in his Rosa medicinae of the fourteenth century, adhered more closely to the earlier form: ed. of 1502, fol. 93^va:

³⁸ Worded differently in the Massa compoti, lines 301-2 (OHI VI 280): Google Scholar

³⁹ Also in OHI VI 115, 267, 279, with slightly different wording and spelling.Google Scholar

⁴⁰ Grosseteste and Bacon omit the third line: OHI VI 118, 267.Google Scholar

⁴¹ See too OHI VI 267.Google Scholar

⁴² Cf. OHI VI 113, 276. For further verses as to feast days, edition of 1543 of Sacrobosco, , Computus, fols. (f vi^r), (f vii)^r–^v, g^r, and cf. OHI VI 144, 260, 246, 275, 260.Google Scholar

⁴³ Quoted also by Grosseteste and Alexander of Villa Dei, OHI VI 246, 283.Google Scholar

⁴⁴ ‘Kalendarium Veronense ecclesiae Rupisclarae in ea diocesi.’ Codex 1 (15th cent.) of the monastery of S. Michele di Murano when it was described in detail by Mittarelli, J.-B., Bibliotheca codicum manuscriptorum monasterii S. Michaelis Venetiarum prope Murianum (Venice 1779) 560–7, whose transcription is here followed. The present location of the MS has not been determined. [For the relation of these verses to others likewise dealing with the dies Aegyptiaci, see supra, in the article of Hennig, John, ‘Versus de Mensibus,’ n. 88. — Edd.] Google Scholar

⁴⁵ In the calendar proper, at the date July 19, is inserted a caution in prose: ‘A xiiii kal. Augusti usque ad nonas Septembris ne minuas sanguinem.' Google Scholar

⁴⁶ British Museum, Cotton MS Julius D. VII, fol. 6^ra–^b is entirely filled with such verses.Google Scholar

⁴⁷ British Museum, Sloane MS 282, fol. 5^v, beginning at 5^r: ‘In hoc calendario ad meridiem universitatis Oxonie composito anno domini 1380 primo ponuntur menses…’ The Calendar itself follows at fols. 6^v-16^v .Google Scholar

⁴⁸ Basel MS A. VIII 32, fols. unnumbered.Google Scholar

⁴⁹ OHI VI 72.Google Scholar

⁵⁰ British Museum, Harley MS 3647, fols. 195^ra-197^rb, opening, ‘Cum eclipsim lune et eius quantitatem…’ and closing, aside from the aforesaid couplet, ‘… Est etiam eclipsis solis possibilis bis in anno non tamen necessaria et pluries similiter est impossibilis sicut eclipsis lune.' Google Scholar

⁵¹ PL 137. 15-48.Google Scholar

⁵² PL 172.145-64.Google Scholar

⁵³ Jones, Charles W., Bedae Pseudepigraphia (Ithaca 1939) 85.Google Scholar

⁵⁴ PL 90.919-38 (at pp. 921, 925, and 934).Google Scholar

⁵⁵ de Coussemaker, E., Scriptorum de musica medii aevi nova series (Paris 1863-76) IV 203, III 114.Google Scholar

⁵⁶ In Coussemaker, I 270: ‘Ante vero longam tria tempora longa fatetur’; the second line the same. At I 272, ‘Continens igitur unum in se tempus, unde versus: Solo recta brevis moderatur tempore quevis.' Google Scholar

⁵⁷ Coussemaker, I 278.Google Scholar

⁵⁸ Coussemaker, I 261-2; also in the De musica plana of a Quidam Carthusiensis (ibid. II 451); de Muris, Johannes, Ars discantus (III 99); Henry of Zeeland (III 115). In de Cruce, Petrus, Tract. de tonis (I 283) and Anon. De musica plana et organica (II 497) the third and fourth lines are different: Google Scholar

⁵⁹ See especially the aforecited De musica plana of the Carthusian (II 434-83); De musica plana et mensurabili, III 416–75.Google Scholar

⁶⁰ At Munich, CLM 56 (15th century), fols. 123^r-153^v: ‘Cum Ptolomeus in Almagesti edisterat (sic) quod bonum fuit…/… habes quia de secretis Ptolomei est. Explicit liber theoreumancie finitus Salzburge anno 1436^to.’ In a Table of Contents pasted on the inside of the front cover we read: ‘Item liber theoreumatum totius quadrivii et continet tractatus plures. Primus est de theorematibus aritmetrice folio 123, Secundus geometrie 131, Tertius musice 138, Quartus astronomie 145.’ The verses occur on fol. 138^r .Google Scholar

⁶¹ Boston Medical Library 7 (in J. F. Ballard's catalogue [Boston 1944]; 20 in De Ricci, S. - Wilson, W. J., A Census of Medieval and Renaissance Manuscripts in the United States and Canada I [New York 1935] 914. 193 fols.).Google Scholar

⁶² Vienna MS lat. 3528, fols. 172^r-73^v .Google Scholar

^62a At the Bodleian, MS Digby 47, fols. 57^r-60^v .Google Scholar

^62b Paris 1936; II 695.Google Scholar

⁶³ It so opens in a MS at Oxford, Exeter College 35, fol. 249^va .Google Scholar

⁶⁴ Basel A.V.14, fol. 104^ra, later cites a Richardus without place-name and without verses as to the pulse. There is no corresponding citation in Basel F.II. 6.Google Scholar

⁶⁵ Basel A.V.14, fol. 103^va, ‘Unde Richardus de Florentiis.' Google Scholar

⁶⁶ Basel, F.II.6, fol. 198^vb .Google Scholar

⁶⁷ Basel F.VIII.16, fol. 161^v. Also at p. 289 of the Latin text of De complexionibus as printed in Archiv für Geschichte der Medizin 20 (1928).Google Scholar

⁶⁸ Basel A.V.14, fol. 104^rb. And in Archiv 20.291.Google Scholar

⁶⁹ Archiv 20.292, 293–4.Google Scholar

⁷⁰ Basel A.V.14, fol. 105^va. In another MS of the same work, Basel F. II.6, fol. 202^va–^b, another citation of the pseudo-Boethius, apparently favoring fornication, is similarly followed by verses.Google Scholar

⁷¹ In De Ricci and Wilson's Census of Medieval and Renaissance Manuscripts in the United States and Canada II (New York 1937) 1238-9, numbered B. 60 (A. 7393), fol. 1^v. I am indebted to the Cornell University Library for a photostat of this page. The brief prose comments on the four temperaments, here printed below each couplet, occur to their right in the MS. These couplets, without the prose, terminate the eight verses on sanguine persons, and the six each on the other three complexions in the Regimen sanitatis ascribed to the School of Salerno: see Ackermann's edition of 1790, lines 267-8, 273-4, 279-80, 285-6. But none of our MSS cite the Regimen for them, although some credit them to Richard, and others, as we are about to see, to Alexander.Google Scholar

⁷² In Copenhagen Gl. kgl. S. 1656 (14-15th century), fols. 168^ra-170^rb, Alexander is represented as the author, ‘Incipit tractatus magistri Alexandri de quatuor complexionibus hominum.’ In CLM 4784 (15th century), fols. 144^v-149^r, ‘Tractatus de quatuor complexionibus’ and Bodleian, Canon. Misc. 480 (15th century), fols. 92-3, which I have not seen, it is anonymous.Google Scholar

⁷³ In the other two MSS the words ‘Hic tractandum est’ precede ‘de complexionibus.' Google Scholar

⁷⁴ The Copenhagen MS omits ‘et vita.' Google Scholar

⁷⁵ Cop. MS has ‘quomodo’ in place of ‘has explanare. Et ut omnis homo.' Google Scholar

⁷⁶ Cop. MS has ‘sitam cognoscere possit’ instead of ‘pars eius possit cognoscere.' Google Scholar

⁷⁷ Cop. MS has ‘versiculos et’ instead of ‘versus sequentes incipiens.' Google Scholar

⁷⁸ Cop. MS omits ‘que est nobilior omnibus illis.’ Google Scholar

⁷⁹ CLM 4784, fol. 145^r .Google Scholar

⁸⁰ CLM 4784, fol. 145^v .Google Scholar

⁸¹ CLM 4784, fol. 148^v; Copenhagen MS (cit. supra n. 72), fol. 170^ra omits the third line and part of the first.Google Scholar

⁸² CLM 2655 (13th cent., membr.) fols. 1-94^vb; 3206 (13th-14th cent.) fols. 1^ra-145^va; 16189 (15th cent., paper) fol. 14^ra-99^vb .Google Scholar

⁸³ CLM 2655, fol. 49^ra. Google Scholar

⁸⁴ CLM 16189, fol. 108^vb .Google Scholar

⁸⁵ CLM 3206, fol. 158^rb .Google Scholar

⁸⁶ CLM 16189, fol. 108^va .Google Scholar

⁸⁷ MS Vat. lat. 4864, fol. 10^v, ‘Frater Albertus super libro de animalibus.' Google Scholar

⁸⁸ There are similar passages in the De animalibus but without indication of verses: lib. I, tract. ii, cap. 13 (p. 106 in Stadler's edition of 1916) ends, ‘et illi qui auferunt a praedicto numero ossa viginti octo dicunt numerum ossium esse ita quod ossa ducenta [not duodena] sunt atque duodena’; I ii 19 (p. 135 in Stadler), ‘Sunt igitur hominis nervi septem cum septuaginta.’ Google Scholar

⁸⁹ CLM 22297 (anno 1320) fol. 25^r: ‘Et illud quod per sermonem longum dictum est, aliter consuevit dici per quatuor versiculos qui sunt tales’; in the edition of Amsterdam, 1740, p. 22, the last clause reads: ‘solet dici per quatuor versus.’ Google Scholar

⁹⁰ Ed. of 1740, ‘Conceptum.’ Google Scholar

⁹¹ Ibid. ‘crude.’ Google Scholar

⁹² Ibid. ‘et. ‘ Google Scholar

⁹³ Ibid. ‘ab.’ Google Scholar

⁹⁴ Ibid. ‘reliquum tempus producit.’ Google Scholar

⁹⁵ In BN, MS lat. 3660A appear three citations of Albertus Magnus, which could not have been made by Michael Scot: fol. 173^v, ‘Secundum Albertum’; 179^r, ‘Alberti magn: menstruum in secundum mensem expellitur’; 184^v, ‘Albertus Magnus De proprietatibus rerum lib. 6, cap. 4, de creatione infantis dicit sic.’ But these passages are not found in the edition of 1740, although it has ‘Unde dixit Pamphilus’ at p. 226, corresponding to the same citation in BN 3660A at fol. 173^r .Google Scholar

⁹⁶ Ed. of 1740, p. 228, ‘tres.’ Google Scholar

⁹⁷ BN 3660A, fol. 174^v, ‘carnem figurat.' Google Scholar

⁹⁸ Ibid. ‘habet.’ Google Scholar

⁹⁹ Cap. 2 (ed. of 1740, p. 215).Google Scholar

¹⁰⁰ Cap. 23 et 24 (ibid. 262).Google Scholar

¹⁰¹ Ibid. 39.Google Scholar

¹⁰² Utrecht, , MS 723, fol. 52^ra; ed. 1740, p. 15.Google Scholar

¹⁰³ Utrecht 723, fol. 54^rb, ‘Antecedens patet in hiis versibus’; ed. 1740, p. 23, ‘Antecedens patet per hunc versum,’ and cites only one line.Google Scholar

The passage is quoted in full in another connection in two Basel MSS of a commentary on John of Paris, De complexionibus: Google Scholar

From Basel A.V.14, fol. 101^vb; about the same in Basel F.II.6. Google Scholar

¹⁰⁴ Ed. 1740, p. 29, ‘Et.’ Google Scholar

¹⁰⁵ Utrecht 723, fol. 56^rb .Google Scholar

¹⁰⁶ Ed. 1740, p. 41, ‘Februoque.' Google Scholar

¹⁰⁷ Utrecht 723, fol. 59^va: ‘Unde nota versus de coytu.’ Google Scholar

¹⁰⁸ Utrecht 723, fol. 60^va: ed. 1740, p. 47: ‘Jejunes vigiles, faciens sic rheumata cures.’ Google Scholar

¹⁰⁹ Rosa medicinae (Venice 1502) fol. 50^vb .Google Scholar

¹¹⁰ Inde? Google Scholar

¹¹¹ I.e., ‘Chirona’ or ‘Sagittarius.' Google Scholar

¹¹² ‘Cantus’ in the MS.Google Scholar

¹¹³ Utrecht 723, fol. 63^va. Not included in ed. 1740.Google Scholar

¹¹⁴ Utrecht 723, fol. 62^va: ed. 1740, p. 54, ‘Versus: Google Scholar

¹¹⁵ Utrecht 723, fol. 76^ra, ed, 1740, p. 114, ‘Sunt hominis dentes triginta duo comedentes.’ Google Scholar

¹¹⁶ Rosa medicinae fol. 118^va .Google Scholar

¹¹⁷ Ibid. fol. 118^vb .Google Scholar

¹¹⁸ Ibid. fol. 119^ra .Google Scholar

¹¹⁹ Edition of 1492, fol. 1^ra. In MS Berne 71 (15th century), fol. 1^va, two lines are quoted: Google Scholar

An older MS, which I have examined only for its incipit and date, is BN 16643 (a. 1356), fols. 1^ra-196^rb: ‘Galienus primo de ingenio sanitatis, Non visites nimis curias et aulas … … Iste liber est completus per manus Magistri Iohannis dicti Roststil de Aquis Grani (?) canonici Aquen anno domini M°GCC°lvi^o in crastino sanete Katherine virginis deo laus et gratiarum actio.’ Google Scholar

¹²⁰ And two more lines which I omit: ed. of 1502, fol. 7^rb .Google Scholar

¹²¹ The explanation is added: ‘id est, furfureus.' Google Scholar

¹²² Ibid. fol. 29^vb .Google Scholar

¹²³ Ibid. fol. 42^ra, ‘Est enim tinea scabies in capite et dicitur quasi caput tenens et de quibusdam istorum sunt versus.’ Google Scholar

¹²⁴ Ibid. fol. 45^rb, ‘et de hoc sunt versus.’ I omit four verses at each of fols. 45^ra, 46^rb, and 46^va .Google Scholar

¹²⁵ Ibid. fol. 44^vb, ‘Et sunt versus de istis sudoribus.’ Google Scholar

¹²⁶ Ibid. fol. 51^va, ‘Unde versus’; 51^vb, ‘Unde de ipsa sunt duo versus.’ Google Scholar

¹²⁷ Ibid. fol. 54^ra, ‘Unde versus…’ and ‘et ideo scribitur.’ Google Scholar

¹²⁸ Ibid. fol. 56^rb. I omit two distichs on fol. 56^vb and a verse on fol. 57^ra .Google Scholar

¹²⁹ Ibid. fol. 57^vb; at 60^ra, ‘Et sunt versus de centaurea quod ipse optime valet in emorroydis,’ followed by six lines which I omit, Google Scholar

¹³⁰ Ibid. fol. 64^rb. This hexameter, from Ovid, , Remedia amoris 91, is quoted with its pentameter (‘cum mala per longas invaluere moras’) in the De imitatione Christi 1.13.Google Scholar

¹³¹ Ibid. fol. 93^r–^b .Google Scholar

¹³² Both quotations at fol. 74^rb, and the latter is repeated at 93^rb .Google Scholar

¹³³ Both at fol. 74^vb .Google Scholar

¹³⁴ Ibid. fol. 70^rb, ‘et versus communis est ad hoc.’ ‘Et similiter, “Ubi dolor, ibi egritudo”.’ Google Scholar

¹³⁵ Ibid. fol. 74^vb, ‘et ideo dicitur in versu communi.' Google Scholar

¹³⁶ Ibid. fol. 110^vb, Google Scholar

¹³⁷ Ibid. fol. 87^va–^b, Google Scholar

¹³⁸ Ibid. fol. 92^vb, where also: ‘Et ideo sunt multi versus de hoc’: Google Scholar

and four lines more, then, ‘Ut dicit versus’:

¹³⁹ Ibid. fol. 93^vb .Google Scholar

¹⁴⁰ Ibid. fol. 74^va .Google Scholar

¹⁴¹ Ibid. fol. 78^va .Google Scholar

¹⁴² Ibid. fol. 73^vb; again at 93^rb .Google Scholar

¹⁴³ Both at fol. 74^ra .Google Scholar

¹⁴⁴ Ibid. fol. 93^ra .Google Scholar

¹⁴⁵ Ibid. fol. 93^rb–^va .Google Scholar

¹⁴⁶ At fols. 93^va, 107^rb, 115^ra and 115^vb, 124^ra. I also omit those on fols. 78^vb, 80^va, 96^rb, 100^rb, 102^ra, 105^vb, 111^va, 112^ra .Google Scholar

¹⁴⁷ These three on fols. 93^va and 94^ra .Google Scholar

¹⁴⁸ Ibid. fol. 135^vb .Google Scholar

¹⁴⁹ British Museum, Harley MS 3843 (15th century), fols. 9^v, 11^r, 11^v and 12^r .Google Scholar

^149a Copenhagen Gl. kgl. S. 1656 (14th century), fol. 171^va: ‘Hic tractandum est de mensibus quomodo te debes regere per totum annum, quem utere debes in quolibet mense.’ Google Scholar

¹⁵⁰ Canon. Misc. 524 (15th century; olim monasterii Sancti Zenonis de Verona), fols. 22^a, recto (with a smaller inset leaf) - 22^b, verso (22^b, recto is left blank). These verses are not listed in Coxe's catalogue of the Canonici MSS, which, after recording the ‘Secreta Alberti Magni de serpente dedita viro doctori sacrae theologiae ordinis minorum de Norenbergia,’ at fol. 17, recto and verso (see Thorndike, , A History of Magic and Experimental Science II [New York 1923] 796) jumps to a treatise on urines by Zacharia of Feltre at fol. 53.Google Scholar

¹⁵¹ On fol. 23^r, after a text, ‘De consuetudine in cibariis. Hora et tempus commedendi, et quotiens in die secundum medicos,’ at the bottom of the page come more verses on eating and drinking.Google Scholar

¹⁵² Singer, D. W., Catalogue of … Alchemical Manuscripts in Great Britain and Ireland (Brussels 1928-31) II Nos. 822-66. For the Mappe clavicula, No. 867.Google Scholar

¹⁵³ Riccardian. 119 (Lami, III.xiii), fol. 45^vb .Google Scholar

¹⁵⁴ Florence, Bibl. Nazionale Centrale, MS Palat. 758 (15th century), fol. 79^v, ‘Ad lunam alia praticha.’ Google Scholar

¹⁵⁵ printed in Zetzner, E., Theatrum chemicum (Strassburg 1659-61) III 138, 139, 140, 142.Google Scholar

¹⁵⁶ Ibid. IV 860. Incipit, ‘Argentum vivum est frigidum et humidum… see Thorndike, L. and Kibre, P., A Catalogue of Incipits (Cambridge, Mass. 1937) 54, and Singer, D. W., Catalogue…Nos. 568, 1057^v. Another ascription to Avicenna in De alchimia opuscula (Frankfurt 1550) I 75^r-91^v; another anon. MS (Univ. Bologna 1062, fols. 43^r-45^r).Google Scholar

¹⁵⁷ Omnia opera … chymica (Frankfurt 1603) 34–5.Google Scholar

¹⁵⁸ A History of Magic and Experimental Science III 106.Google Scholar

¹⁵⁹ Zetzner II 395.Google Scholar

¹⁶⁰ John Rylands Library, MS 65, fols. 55^r-73^r .Google Scholar

¹⁶¹ Ibid. fol. 70^v .Google Scholar

¹⁶² Ibid. fol. 147^v. In Zetzner IV 989 the couplet reads: Google Scholar

¹⁶³ Zetzner III 663-97.Google Scholar

Columbia University. Google Scholar

¹⁶⁴ British Museum, Cotton MS Vespasian E. VII, fol. 1, ‘De diametro terre et distantiis planetarum.' Google Scholar

¹⁶⁵ Vesp. E. VIII, fol. 108.Google Scholar