Portuguese texts on the calculus in the 18th century

[Excerpt] Having appeared at the end of the seventeenth century, the calculus (differential and integral calculi for Leibniz, method of fluxions for Newton) was un doubtedly the most important branch of pure mathematics in the eighteenth century. This importance was recognized at the time: “one of the most wonderful inventions in mathemat ics, which not only raised geometry almost to its high est peak, but also expanded the other disciplines to such an extent that one would have to write entire books if one wanted to specify the benefits of this calculus” [Zedler, 1731–1754, vol. 5, col. 190]. “Of all the discoveries that have ever been made in the sciences, there is none as important, nor as fruitful in applications, as that of infinitesimal analysis” [Bossut, 1784, lxxii]. [...]