Note 127 — Chapter III · 1474-1492.
Reading edition
Antonio Pigafetta, in his Treatise on navigation, written about the year 1523, says: “The circumference of the earth is supposed to be divided into three hundred and sixty degrees, and to each degree are assigned seventeen leagues and a half; the circumference of the earth is consequently six thousand three hundred leagues. The land league is three miles, the sea league is four.”—MS. in Ambrosian library, Milan.