[526] Unless Corrêa’s description (_Lendas_, iv. 288-9) is earlier. Other events recorded by Corrêa which must have closely affected Orta are the fate of a bachelor of medicine strangled and burnt by the Inquisition at Goa in 1543 (iv. 292) and the outbreak of small-pox, from which 8,000 children died there in three months in 1545 (iv. 447). The _Dialogo da perfeyçam & partes que sam necessarias ao bom medico_ (1562), with the exception of the dedicatory letter to King Sebastian and the title, is written in Spanish (25 ff.). Apparently AFONSO DE MIRANDA found it in Latin among the books of his son Jeronimo (who had studied at Coimbra and Salamanca) and translated it. [527] _Composto_, he says (_Coloquios_, i. 5). Dimas Bosque (ib. i. 11) says _começado_. [528] Thus he contributed to the fact, which he notices in the _Tratado da carta de marear_, that the Portuguese sea enterprises were based on careful preparation. The _nonius_ was perfected in the following century by Vernier. [529] _Tratado da Sphera_, Preface. [530] This volume contains also two brief treatises by Nunez in Portuguese: _Tratado ... sobre certas duuidas da nauegação_, answering certain questions put to him by Martim Afonso de Sousa, and _Tratado ... em defensam da carta de marear_, addressed to the Infante Luis. The _De Sphaera_ of Joannes de Sacro Bosco was printed with a preface by Philip Melanchthon in 1538. Arraez, in his _Dialogos_, 1604 ed., f. 56, says: _sei algo da Sphera porque quando Pero Nunez a lia a certos homens principais eu me achava presente_. [531] He himself says that he was born in the excellent city of Lisbon (_Esmeraldo_, iv. 6), and he was one of the captains sent out by João II to continue the discovery of the West Coast of Africa. In 1520-2 he was Governor of the fortress of S. Jorge da Mina, but his last years were spent in poverty. [532] Other works of a similar nature, _livros das rotas_ or _derrotas_, are printed in _Libro de Marinharia_. _Tratado da Aguia de Marear_ [1514] _de João de Lisboa_ [†1526]. _Copiado e coordenado por J. I. Brito Rebello_, 1903. Cf. also G. Pereira, _Roteiros Portuguezes da viagem de Lisboa á India nos seculos xvi e xvii_, 1898; H. Lopes de Mendonça, _Estudos sobre navios portuguezes nos seculos xv e xvi_, 1892, and _O Padre Fernando Oliveira e a sua obra nautica_, 1898 (pp. 147-221 contain _O Liuro da fabrica das naos_, of which, says the preface, _ninguem escreveo ateegora_); and Sousa Viterbo, _Trabalhos nauticos dos portuguezes nos seculos xvi e xvii_ (_Historia e Memorias da Ac. das Sciencias_, tom. vii (1898), _mem._ 3; tom. viii (1900), _mem._ 1). Diogo de Sá’s _De Navigatione_ was published in Paris in 1549; the _Arte Practica de Navegar_ (1699) by the _Cosmographo Môr_ Manuel Pimentel (1650-1719) appeared a century and a half later and had several editions in the eighteenth century. [533] Fr. Antonio de San Roman, _Historia General de la India Oriental_, Valladolid, 1603.