THE SPREAD OF CONQUEST IN THE ANCIENT WORLD III.

GEOGRAPHY IN THE DARK AGES IV.

MEDIAEVAL TRAVELS--MARCO POLO, IBN BATUTA V.ROADS AND COMMERCE VI.

TO THE INDIES EASTWARD--PORTUGUESE ROUTE--PRINCE HENRY AND VASCO DA GAMA VII.

TO THE INDIES WESTWARD--SPANISH ROUTE--COLUMBUS AND MAGELLAN VIII.