[Footnote 387: "En el ano de 1442, viendo el Infante que se habia pasado el cabo del Boxador y que la tierra iba muy adelante, y que todos los navios que inviaba traian muchos esclavos moros, con que pagaba los gastos que hacia y que cada dia crecia mas el provecho y se prosperaba su amada negociacion, determino de inviar a suplicar al Papa Martino V., ... que hiciese gracia a la Corona real de Portogal de los reinos y senorios que habia y hobiese desde el cabo del Boxador adelante, hacia el Oriente y la India inclusive; y ansi se las concedio, ... con todas las tierras, puertos, islas, tratos, rescates, pesquerias y cosas a esto pertenecientes, poniendo censuras y penas a todos los reyes cristianos, principes, y senores y comunidades que a esto le perturbasen; despues, dicen, que los sumos pontifices, sucesores de Martino, como Eugenio IV. y Nicolas V. y Calixto IV. lo confirmaron." Las Casas, _Hist. de las Indias_, tom. i. p. 185. The name of Martin V. is a slip of the memory on the part of Las Casas. That pope had died of apoplexy eleven years before. It was Eugenius IV. who made this memorable grant to the crown of Portugal. The error is repeated in Irving's _Columbus_, vol. i. p. 339.] [Footnote 388: The first published account of the voyages of Cadamosto and Cintra was in the _Paesi nouamente retrouati_, Vicenza, 1507, a small quarto which can now sometimes be bought for from twelve to fifteen hundred dollars. See also Grynaeus, _Novus Orbis_, Basel, 1532.] [Sidenote: Advance to the Hottentot coast.] Prince Henry did not live to see Africa circumnavigated. At the time of his death, in 1468, his ships had not gone farther than the spot where Hanno found his gorillas two thousand years before. But the work of this excellent prince did not end with his death. His adventurous spirit lived on in the school of accomplished navigators he had trained. Many voyages were made after 1462, of which we need mention only those that marked new stages of discovery. In 1471 two knights of the royal household, Joao de Santarem and Pedro de Escobar, sailed down the Gold Coast and crossed the equator; three years later the line was again crossed by Fernando Po, discoverer of the island that bears his name. In 1484 Diego Cam went on as far as the mouth of the Congo, and entered into very friendly relations with the negroes there. In a second voyage in 1485 this enterprising captain pushed on a thousand miles farther, and set up a cross in 22 deg. south latitude on the coast of the Hottentot country. Brisk trading went on along the Gold Coast, and missionaries were sent to the Congo.[389]