[1488.] Desmarquets, _Mémoires Chronologiques, etc._, Dieppe, 1785, tom. i. pp. 92-8, states that one Cousin sailed from Dieppe early in 1488, stood off further from land than other voyagers had done, and after two months reached an unknown land and a great river, which he named the Maragnon. Was this the Marañon in South America? He then sailed south-eastward and discovered the southern point of Africa, returning to Dieppe in 1489. The discovery was kept secret, but Cousin made a second voyage round the cape and succeeded in reaching India. Major, besides pointing out some inconsistencies in this account, shows that M. Desmarquets "could commit himself to assertions of great moment which are demonstrably false." He is not good authority for so remarkable a discovery not elsewhere recorded. * * * * * [Sidenote: THE COLUMBIAN EPOCH.] Before striking out with Columbus in his bold venture to the west, let us sum up what we have learned thus far and see where we stand. First, the geographical knowledge of the ancients was restricted to a parallelogram extending north-west and south-east from the Atlantic to the Indian ocean, comprising one hundred and twenty degrees east and west by fifty degrees north and south; circumscribe this knowledge with legendary stories and hypothetical and traditional beliefs concerning the regions beyond; then add a true theory of the earth's sphericity, though mistaken as to its size. This is all they knew, and this knowledge they committed to the Dark Age, during which time it was preserved, and, indeed, little by little enlarged, as we have seen. During the latter part of the fifteenth century, particularly, a powerful impulse had been given to discovery, especially toward the south; so that now the limits of the ancients were moved eastward at least forty degrees, to the eastern coasts and islands of Asia, chiefly by the travels of Marco Polo and Sir John Mandeville. Toward the south, the true form of Africa had been ascertained, and its coasts had been explored by the Portuguese, except a space of about fifteen degrees on the south-west. Northward the old limit had been advanced but slightly, but within this limit much information had been gained by actual navigation about regions only vaguely described by Ptolemy. Westward, in what was still a Sea of Darkness, great discoveries had been made by the Northmen, but their results were now practically lost; while toward the south, several important groups of islands had been added to the known world. See map on page 73, where the regions added during this period are lightly shaded. And now, within the old bound the world is much better known than at the beginning of the period, and many minor geographical errors of the ancients have been corrected by the Crusaders, and others who attempted on a smaller scale to extend the Catholic faith, as well as by commercial travellers in distant lands.