Note 51 — CONTENTS AND ILLUSTRATIONS.

F. Toscanelli’s Atlantic Ocean.—It has been shown elsewhere (Vol. II. pp. 30, 31, 38, 90, 101, 103) that Columbus in the main accepted the view of the width of the Atlantic, on the farther side of which Asia was supposed to be, which Toscanelli had calculated; and it has not been quite certain what actual measurement should be given to this width, but recent discoveries tend to make easier a judgment in the matter.