A word must be added on the completion of Prince Henry's work after his death, and by agents whom in many cases he had trained. King Affonso V, though rather more of a tournament king than a true successor of the great Infant, such as John II, had yet caught enough of his uncle's spirit to push on steadily, though slowly, the advance round Africa. In 1461 he repaired the fort in the Bight of Arguim and sent out Pedro de Sintra[47] to survey the coast beyond Cadamosto's furthest point. De Sintra proceeded 600 miles along the "southern coast of Guinea," passed a mountain which was called Sierra Leone (according to one account) from the lion-like growl of the thunder on its summits, and turned back at the point afterwards known as St. George La Mina.[48] Soon after (probably in 1462), Sueiro da Costa followed De Sintra,[49] but without any new results, and it was not till 1470 that a fresh advance was made.[50] In 1469 King Affonso leased the West African trade to Fernam Gomez, a citizen of Lisbon, for five years, Gomez paying 1,000 ducats a year. To this lease was annexed the condition that Gomez should make annual explorations along the unknown West coast of Africa for 300 _miglia_, counted from Sierra Leone, "where Pedro de Sintra and Sueiro da Costa turned back."[51] [Footnote 47: This voyage is described by Cadamosto as an appendix to his own voyages. A young Portuguese who accompanied De Sintra described to Cadamosto the stretch of coast now discovered beyond the Rio Grande, the anchorages of the fleet, and the names given to points on the shore. "This account, without any rhetorical embellishment, is of special interest as a specimen of a Portuguese sailing-direction from a sailor of Henry the Navigator's School" (Nordenskjöld, _Periplus_, 121). De Sintra reached 5° further South than any before him. His nomenclature still survives at many points: _e.g._, Cape Verga, Sierra Leone, Cape Santa Anna, Cape del Monte, Cape Mesurado. Cape Sagres, "the highest promontory they had ever seen," between Cape Verga and Cape Ledo, has been re-named. De Sintra also noticed especially a "great green forest"--"Bosque de St. Maria," in 5° 30' N. lat. (?)--and near his furthest point (at Rio dos Fumos) an immense quantity of smoke from native fires. Cf. Hanno's language in his _Periplus_, on the fiery rivers running down into the sea; and see J. N. Bellin's _Petit Atlas Maritime_, Paris, 1764; Part iii, Map 105.] [Footnote 48: Elmina.] [Footnote 49: According to some, he accompanied De Sintra in the voyage of 1461.] [Footnote 50: Cadamosto explicitly says that when he left Portugal on February 1, 1463, no voyages had been made in continuation of De Sintra's venture, recorded by him.] [Footnote 51: According to Cadamosto's account, De Sintra had gone a good deal further.]