[84] Specht, op. cit., pp. 138-139; Dummler, E. Ekkehart IV von St. Gallen. (In: Zeitschrift für deutsches Altertum. Berlin, 1869. Neue Folge, Vol. 2, p. 23.) The implication in the last named work seems to be that globes were used in many of the schools of this early day. Mabillon, J. Veterum analectorum. Paris, 1676. Tom. 2, p. 212. The statement here made clearly refers to the use of globes in astronomical instruction. [85] Gerbert, Letters of, 983-997, publiées avec une introduction et des notes par J. Havet. Paris, 1889. See especially Nos. 134, 148, 152, 162. Gerbert refers, in these letters to Remigius, to a globe which he intended to construct. [86] Lelewel, op. cit., Vol. II, p. 2. [87] Raumer, F. v. Geschichte der Hohenstaufen und ihre Zeit. Leipzig, 1878. Vol. III, p. 493. This astronomical tent has sometimes been referred to as a globe. [88] Libros del Saber de Astronomia del Rey D. Alfonso X de Castilla. Compilados, anotados y comentados por Don Manuel Rico y Sinobas. Madrid, 1863-1867. See especially Vol. I, pp. 153 ff. [89] Enciclopedia Universal illustrada, “Campano”; Tiraboschi, G. Storia della letteratura italiana. Roma, 1782-1785. Tom. IV, lib. ii, cap. ii, §v; Fiorini. Sfere terrestri. pp. 40-56. There are numerous manuscripts of Campano to be found in the University Library of Bologna, in the Ambrosiana of Milan, and in the Library of San Marco in Venice. Fiorini refers to a number of writers who may be said to have followed and in part copied Campano. [90] Albertus Magnus. Liber de coelo et mundo. Lib. II 4, c. 9. For a short biography of Albertus see Encyclopaedia Britannica, “Albertus Magnus.” [91] Günther, S. Geschichte des mathematischen Unterrichtes, im deutschen Mittelalter bis zum Jahre 1525. Berlin, 1887. pp. 184 ff. [92] Catalogue of Printed Books in the British Museum contains a list of more than fifty editions, the first being printed in the year 1472. [93] Biographies are numerous. See Dictionary of National Biography, “Roger Bacon,” with bibliographical list. See Bacon’s Opus Magnus, lib. I, 152-153, “necesse est vero mundum extra habere figuram spericam ...”; also lib. IV, in which he treats of the form of the earth. [94] See for a short biography Nouvelle biographie. Paris, 1866. “Thomas d’Aquin.” [95] Bourgeat, J. B. Études sur Vincent de Beauvais. Paris, 1856. [96] Biographies of Dante are numerous. See his Purgatorio, Canto XXVII, lines 1-4, referring to midday on the Ganges when it is dawn in Jerusalem; see also his Aqua et Terra, wherein he gives expression to a belief in the spherical theory. Chapter V Globes Constructed in the Early Years of the Great Geographical Discoveries