Note 369 — Chapter I · (continued 2)
Reading edition
Major, Prince Henry (1868 ed.), pp. 57, 60. There is some ground for believing that the Northmen were acquainted with the loadstone in the eleventh century. Prescott (Ferdinand and Isabella, 1873 ed., ii. III) indicates the use of it by the Castilians in 1403. Cf. Santarem, Histoire de la cartographie, p. 280; Journal of the Franklin Institute, xxii. 68; American Journal of Science, lx. 242. Cf. the early knowledge regarding the introduction of the compass in Eden’s Peter Martyr (1555), folio 320; and D’Avezac’s Aperçus historiques sur la boussole, Paris, 1860, 16 pp.; also Humboldt’s Cosmos, Eng. tr. ii. 656.