Chapter XI: Appendix: I

SOME MEDIEVAL JOHNS, MENTIONED IN THE MANUSCRIPTS, IN THE FIELDS OF NATURAL AND OCCULT SCIENCE, MATHEMATICS, AND MEDICINE

Johannes Anglicus: see John of Montpellier.

Johannes Archangel: Additional 22773, 13th century, fol. 45,
“Tabule Johannis Archangeli” astronomiae; said to be the
same as Johannes Campanus.

Johannes de Beltone, Sloane 314, 15th century, fol. 106,
Experimentum de re astrologica bonum (imperfect).

Johannes Blanchinus, BN 7268, Distinctiones in Ptolemaei
almagestum; BN 7269, 7270, 7271, 7286, Tabulae
astronomicae; BN 7270, 7271, de primo mobili; Perugia
1004, 15th century, “Tractatus primus de arithmetricha
per Johannem de Blanchinis.... Regule conclusionum ad
practicam algebre in simplicibus.... Tractatus florum
Almagesti.” Professor Karpinski informs me that the
_Flores Almagesti_ of Giovanni Bianchini was discussed
by L. Birkenmajer in _Bull. d. l’Acad. d. Sciences de
Cracovie_, 1911.

Johannes Bonia, Valentinus, BN 7416A, translated Fachy,
_Sex genera instrumentorum sive Canones Quadrantis
universalis_; see Steinschneider (1905) p. 39.

John of Brescia, who translated with Profatius Judaeus at
Montpellier; see Steinschneider (1905) 40.

John of Campania, BN 6948, 14th century, #1, “Abenzoaris
Taysir sive rectificatio medicationis et regiminis,”
translated from Hebrew into Latin.

Johannes Campanus (of Novara) is of course well known
for his _Theory of the Planets_ and translation of
and commentary on Euclid. Perhaps less familiar works
are: Additional 22772, 15th century, Johannis Campani
Novarensis liber astronomicus de erroribus Ptolemaei,
dedicated to Pope Urban IV; Amplon. Quarto 349, late 14th
century, fols. 57-65, de figura sectorum; indeed, the
collection of Amplonius at Erfurt is rich in works by
Campanus. Concerning him see further HL XXI (1847) 248-54
and Duhem III (1915) 317-21. They hold that Campanus
is not called John in the MSS. His letter to Urban IV
(1261-1265) and Simon of Genoa’s dedication of this
_Clavis sanationis_ in 1292 to “master Campanus, chaplain
of the pope and canon at Paris,” serve to date him in the
later 13th century.

John of Cilicia (apparently the same as John of Sicily),
Harleian 1, fols. 92-151, Scripta super Canones Arzachelis
de tabulis Toletanis.

John Dastine (or Dastyn), among whose treatises on alchemy
may be mentioned Ashmole 1446, fols. 141-54v, “Incipit
epistola ... ad Papam Johannem XXII transmissa de
alchimia”; also found in CU Trinity 1122, 14-15th century,
fol. 94v-.

Johannes de Dondis, Laud. Misc. 620, 16th century, “Opus
Planetarii Johannis de Dondis, fisici, Paduani civis.”

Iohannes Egidii Zamorensis, Berlin 934, 14th century, 242
fols., de historia naturali; it includes a reproduction of
John of Spain’s 39 chapters on the astrolabe.

John of Florence, Magliabech. XI-22; XVI-66, fols. 260-301,
“Incipit liber de magni lapidis compositione editus a
magistro artis generalis florentino.... / ... Explicit
secretum secretorum mineralis lapidis mag Io.”

Joannes de Janua (Genoa), BN 7281, 7322, Canon eclypsium;
7281, Investigatio eclipseos solis 1337; 7282, Canones
Tabulares. He is classed by Duhem IV (1916) 74-, as a
disciple of Jean des Linières.

Joannes de Lineriis, BN 7281, 15th century, #9, Theorica
planetarum ed. anno 1335, #11, Canones tabularum Alphonsi
anno 1310; and other astronomical treatises in BN 7282,
7285, 7295, 7295A, 7329, 7378A, 7405, etc. Gonville and
Caius 110, 14th century, pp. 1-6, Canones super magnum
almanach omnium planetarum a mag. Iohanne de Lineriis
picardi ambianensis dyocesis, compositum super meridianum
parisiensem. See also Duhem IV (1916) 60-68, “Jean des
Linières.”

Ioannes Lodoycus Tetrapharmacus, S. Marco XIV-38, 14th
century, 160 fols., “Antidotarius Galaf Albucassim
Açarauni a Ioanne Lodoyco Tetrapharmaco gebenensi filio
Petri fructiferi mathematici ... de arabico in latinum
translatus” (1198 A. D.).

John of London, BN 7413, 14th century, fols. 19v-21r, de
astrologia judicaria ad R. de Guedingue, or it may be
better described as a letter, written in 1246 or shortly
thereafter (“usque ad consideracionem meam que fuit anno
Christi 1246”), in which John discusses various matters,
including the motion of the eighth sphere and dog days,
and states that he is sending a transcript of tables of
the fixed stars which he verified at Paris.

The John of London who gave so many MSS to the library of
St. Augustine’s, Canterbury--see James (1903)--would seem
to have been of later date, since his books included
works of Aquinas, Roger Bacon, and John Peckham, the
chronicle of Martin which extends to 1277, translations
of the astrological treatises of Abraham aben Ezra which
were not made until toward the close of the 13th century,
and even treatises by Joannes de Lineriis who wrote in
the early 14th century and William of St. Cloud who made
his astronomical observations between 1285 and 1321. It
therefore seems unlikely that the donor, John of London,
could be even the young lad who was spoken of in such high
terms by Roger Bacon, as is suggested by James (1903) pp.
lxxiv-vii. Possibly the Friar John mentioned below is
Bacon’s protégé.

John Manduith, CUL 1572 (Gg. VI. 3), 14th century,
astronomical treatises and tables. Other MSS, mentioned by
Tanner (1748) p. 506, contain tables finished by him in
Oxford in 1310.

Johannis de Mehun (Jean de Meun), de lapide minerali et de
lapide vegetabili, Sloane 976, 15th century, fols. 85-108;
Sloane 1069, 16th century.

Johannes de Messina, a translator for Alfonso X in 1276;
perhaps identical with John of Sicily, see Steinschneider
(1905) p. 51.

Fratris Joannis ord. Minorum Summa de astrologia, BN 7293A,
14th century, #3. Possibly this is Roger Bacon’s lad John
following in his master’s footsteps.

John of Montpellier or Anglicus (and see John of St.
Giles), a treatise on the quadrant. BN 7298, 7414, 7416B,
7437, Joannes de Montepessulano de quadrante; Firenze
II-iii-22, 16th century, fols. 268-82, “Explicit quadrans
magistri Iohannis Anglici in monte;” Firenze II-iii-24,
14th century, fols. 176-82, “Incipit tractatus quadrantis
veteris secundum magistrum Iohannem de Montepessulano.”
CUL 1707 (Qi. I. 15), fols. 10-14r, “Quadrans Magistri
Johannis Anglici in Monte Pessulano.” CUL 1767 (Qi, III.
3), 1276 A. D., fols. 56-60, Tractatus quadrantis editus a
magistro Johanne in monte Pessulano.

John of Meurs (Johannes de Muris), a French writer on music,
mathematics and astronomy in 1321, 1322, 1323, 1339, and
1345. Parts of his works have been printed. See further
L. C. Karpinski, “The ‘Quadripartitum numerorum’ of
John of Meurs,” in _Bibl. Math._ (1912-1913) 99-114; R.
Hirschfeld, _Io. de Muris_, 1884; Duhem (1916) IV, 30-37.

Johannes Ocreatus, see Steinschneider (1905) p. 51.

Johannes Papiensis, see Steinschneider (1905) p. 51.

Johannes Parisiensis, master in theology, besides several
theological treatises wrote _de yride_ and _super librum
metheorum_. His _Contra corruptum Thome_ shows that he
wrote after Aquinas. See Denifle (1886) p. 226.

There was also a medical writer named John of Paris who
perhaps, rather than Thaddeus of Florence, wrote the
treatise, De complexionibus corporis humani, Amplon.
Quarto 35, 1421 A. D., fols. 142-58. The remark of V. Rose
may also be recalled, “Ioh. Parisiensis ist bekanntlich
ein Mädchen für alles.”

John of Poland, Addit. 22668, 13th-14th century, “Liber
Magistri Johannis Poloni,” medical recipes, etc.

Johannes de Probavilla, Vienna 2520, 14th century, fols.
37-50, “Liber de signis prognosticis.”

John of Procida, see De Renzi, III, 71, Placita
Philosophorum Moralium Antiquorum ex Graeco in Latinum
translata a Magistro Joanne de Procida Magno cive
Salernitano.

Johannes de Protsschida, CLM 27006, 15th century, fols.
216-31, Compendium de occultis naturae.

Ioannes de Rupecissa, a Franciscan who wrote various works
on alchemy and who was imprisoned by the pope in 1345 for
his prophecies concerning the church and antichrist; it
would take too long to list the MSS here.

Johannes de Sacrobosco (John Holywood), well known for his
_Sphere_, which has been repeatedly printed and was the
subject of commentaries by many medieval authors.

Joannes de S. Aegidio (John of St. Giles, also Anglicus or
de Sancto Albano), Bodleian 786, fol. 170, Experimenta
(medical).

John of St. Amand, a medical writer, discussed in our 58th
chapter.

Johannes de Sancto Paulo, another medical writer whose best
known work seems to be that on medicinal simples.

John of Salisbury; see our 41st chapter.

John of Saxony, or John Danko of Saxony, at Paris in 1331
wrote a commentary on the astrological Ysagogicus of
Alchabitius, which John of Spain had earlier translated.
Amplon. Quarto 354, 14th century, fols. 4-59, Commenta
Dankonis scilicet magistri Iohannis de Saxonia super
Alkubicium; Amplon. Folio 387, 14th century, 46 fols.,
Iohannis Danconis Saxonis almanach secundum tabulas
Alfonsinas compositum et annis 1336-1380 meridiano
Parisiensi accomodatum--also in Amplon. Folio 389 and many
other MSS; BN 7197, 7281, 7286, 7295A, Canones ad motum
stellarum ordinati. Duhem IV (1916) 77 and 578-81 holds
that two men have been confounded as John of Saxony,--one
of the 13th, the other of the 14th century.

Johannes de Sicca Villa, Royal 12-E-XXV, fols. 37-65, de
principiis naturae.

Joannes de Sicilia, BN 7281, 7406, Expositio super canones
Arzachelis. Steinschneider (1905) p. 51, dates it in
1290 and regards this John as “hardly to be identified”
(“schwerlich identisch”) with John of Messina. See also
Duhem IV (1916) 6-9.

Joannes de Toledo, perhaps identical with John of Spain, as
we have said.

Iohannes de Tornamira, dean or chancellor of Montpellier,
Amplon. Folio 272, 1391 A. D., fols. 1-214,
Clarificatorium ... procedens secundum Rasim in nono
Almansoris.

Joannes Vincentius, Presbyter, Prior Eccles. de Monast,
super Ledum, BN 3446, 15th century, #2, Adversus magicas
artes et eos qui dicunt artibus eisdem nullam inesse
efficaciam; Incipit missing.

John of Wallingford, Cotton Julius D-V I, fols. 1-7r, an
astronomical fragment.