Chapter XXIX contains a short notice of a voyage undertaken by Antam Gonçalvez, Gomez Pirez, and Diego Affonso to the Rio d'Ouro, which had no result.
Chapter XXX deals with the voyage of Nuno Tristam, who passed the furthest point hitherto discovered, and reached a place he named Palmar. Azurara confesses himself unable to give more details about this expedition, "because Nuno Tristam was already dead at the time King Affonso ordered this Chronicle to be written"—a statement which proves that he did not rely only on documents for the facts he related, but was careful to glean as much as possible from the actors therein.
Chapter XXXI tells how Dinis Dyaz sailed straight to Guinea without once shortening sail, and how he was the first to penetrate so far, and take captives in those parts. He pushed on to Cape Verde, and, though he brought back but little spoil, he was well received by the Infant, who preferred discoveries to mere commercial profits.
Chapters XXXII to XXXVI recite the expedition of Antam Gonçalvez, Garcia Homem and Diego Affonso to Cape Branco, Arguim Island and Cape Resgate, where, besides trafficking, they took on board a squire, Joham Fernandez, who had stayed full seven months at the Rio d'Ouro, among the natives, to acquire for the Infant a knowledge of the country and its products.
Azurara refers in Chapter XXXII to Affonso Cerveira, whose history of the Portuguese discoveries on the African coast, now lost, was used by him in the compilation of this Chronicle; and in the next chapter he employs one of those rhetorical periphrases of which his other works afford many an example, though they are rather scarce in this his masterpiece in point of style.
Chapters XXXVII to XLVIII relate the doings of the first expedition from Lisbon, which was under the command of Gonçalo Pacheco, and penetrated to Guinea, or the land of the Negroes, the result being a large number of captives, seemingly the chief object it had in view.
Chapters XLIX to LXVII contain the acts of the great expedition of fourteen sail which set out from Lagos in 1445, under the leadership of Lançarote, for the purpose of punishing the Moors on the Island of Tider and avenging Gonçalo de Cintra. In all twenty-six ships left Portugal that year, being the largest number that had perhaps ever sailed down the Western side of the Dark Continent at one time.
After accomplishing their object some returned home, but others, more bold, determined to explore further South, if perchance they might find the River of Nile and the Terrestrial Paradise. Arriving at the Senegal they thought they had found the Nile of the Negroes, and went no further. A curious description of the Nile, and its power according to astronomers, forms the subject of Chapters LXI and LXII, where Azurara has collected all the learning and speculation of the Ancients and Mediævals on the question.
Chapters LXVIII to LXXV describe the doings of the remaining ships that left Portugal in 1445, and relate descents on the Canaries and the African coast, and the voyage of Zarco's caravel to Cape Mastos, the furthest point yet reached.
Chapters LXXVI and LXXVII contain valuable notes on the life of the peoples south of Cape Bojador, together with an account of the travels of Joham Fernandez, the first European to penetrate far into the interior of Africa.