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.