Sentence:  ... about Capo Frio in Brasilia, the south point varieth twelve degrees unto the West, and about the mouth of the Straites of Magellan five or six; but <WSD>elongating</WSD> from the coast of Brasilia toward the shore of Africa it varyeth Eastward, 
Meaning of the word marked with <WSD> tags:  To depart to, or be at, a distance ("from" something); especially, to recede apparently from the sun, as a planet in its orbit.<ref>(Samuel Johnson), "(A Dictionary of the English Language)," London: Strahan, 1755, Volume(nbsp)1: “To E<small>LONGATE</small>. (...) To go off to a distance from any thing.”[https://babel.hathitrust.org/cgi/pt?id=ucm.5326809190&view=1up&seq=694&size=150]</ref>