Chapter XXXI

.

[355] On Gerbert see _Lettres de Gerbert publiées avec une introduction, etc._, par Julien Havet (Paris: Picard, 1889; I have cited them according to this edition); _Œuvres de Gerbert_, ed. by Olleris (Clermont and Paris, 1867); also in Migne, _Pat. Lat._ 139; Richerus, _Historiarum libri IV._ (especially lib. iii. cap. 55 _sqq._); _Mon. Germ. script._ iii. 561 _sqq._; Migne, _Pat. Lat._ 138, col. 17 _sqq._ Also Picavet, _Gerbert, une pape philosophe_ (Paris: Leroux, 1897); Cantor, _Ges. der Mathematik_, i. 728-751 (Leipzig, 1880); Prantl, _Ges. der Logik_, ii. 53-57 (Leipzig, 1861).

[356] _Ep._ 12.

[357] _Mon. Germ. scriptores_, iii. 686.

[358] _Ep._ 44.

[359] Presumably Gerbert’s German-speaking scholars are meant.

[360] _Ep._ 45, _Raimundo monacho_.

[361] _Ep._ 46, _ad Geraldum Abbatem_.

[362] _I.e._ on the affairs of the monastery of Bobbio.

[363] A Greek doctor of Augustus’s time, who wrote on the diseases of the eye.

[364] _Ep._ 130.

[365] _Ep._ 167 (in Migne, _Ep._ 174).

[366] Richer, _Hist._ iii. 47, 48.

[367] Several of his compositions are extant.

[368] Richer, _Hist._ iii. 48-53.

[369] Richer, _Hist._ iii. cap. 55-65.

[370] See _post_,