CHAPTER I. EARLY YEARS. [1446-1484] 1-33

Genoa, 1.--Place of Birth, 2.--Time of Birth, 4.--Family, 6. --Early Studies, 7.--Early Maritime Experience, 9.--Piratical Expeditions, 10.--Voyage to Africa, 11.--Voyage to Iceland, 12.-- Experience as Bookseller and Mapmaker, 14.--Removal to Portugal, 16. --Marriage, 17.--Children, 19.--Commercial Speculation, 21.-- Extent of his Experience, 21.--Theory of the Sphericity of the Earth, 23.--Progress of the Idea, 25.--Cardinal d’Ailly’s _Imago Mundi_, 27.--Causes of Delay, 27.--Discoveries by the Norsemen, 28.-- Toscanelli’s Letters, 29.--General Approaches to the Discovery, 32.