[221] Cotton, Appendix VI.
[222] For the biography and bibliography of Robert of Chester see L. C. Karpinski, Robert of Chester’s Latin Translation of the Algebra of Al-Khowarizmi, New York, 1915, especially pp. 26-32; C. H. Haskins, The Reception of Arabic Science in England, EHR 30 (1915), 62-5; Steinschneider (1905), pp. 67-73.
[223] Karpinski (1915), pp. 26, 29-30.
[224] See above, chapter 30, I, 702-3. Besides the articles of Clerval and Haskins there mentioned we may note A. A. Björnbo, Hermannus Dalmata als Uebersetzer astronomischer Arbeiten, in Bibliotheca Mathematica, VI (1903), third series, pp. 130-3.
[225] Steinschneider (1905), pp. 32-5. He says, “Hermannus Alemannus, oder Teutonicus, Germanicus, soll um 1240-1260 Lehrer des Roger Bacon in Toledo (?) gewesen sein,” but I do not know where he gets the notion that Hermann was Roger’s teacher. The following works ascribed to Hermannus Theutonicus by Denifle (1886), p. 231,—and not mentioned by Steinschneider—seem to indicate another person of that name: “(41) fr. Hermannus Theutonicus de Cerwist (Zerbst) scripsit postillam super cantica; (50) fr. Hermannus Theutonicus scripsit librum de ascensu cordis. Item super Cantica. Item de arte precandi.” In Vienna 2507, 13th century, fols. 85-123, an Ars dictandi is attributed to “Magistri Heremanni.”
On the part taken by Hermannus Alemannus in the translation of Aristotle in the thirteenth century see further Grabmann (1916), pp. 208-12, 217-22, etc., where translations of his are connected with the dates 1240 and 1254.
[226] Clare College 15 (Kk. 4. 2), c. 1280 A. D., fols. 1-2r, Hermannus, liber imbrium, “Cum multa et varia de imbrium cognicione precepta Indorum tradat auctoritas ... / ... plerumque etiam imbres occurrunt set steriles” Iafar on rains immediately follows.
Vienna 2436, 14th century, fols. 134v-136v, “Cum multa et varia ... / ... eciam ymbres occurrant sed mediocres. Finitur Hermanni liber de ymbribus et pluviis.”
Dijon 1045, 15th century, fols. 187-91 (following Hermann’s translation of Albumasar), “de pluviis ab Hermano (de) Kanto (?) a judico in latinum translatus. Cum multa et varia de nubium cognicione ... / ... occurrunt sed steriles.”
[227] In CUL 2022 (Kk. IV. 7), 15th century, fol. 116, however, such a short glossary preceding prognostications of famine is said to be “secundum Hermannum Teutonicum.”