Note 424 — Chapter IV · THE SOURCES FOR THE PERIOD 1100–1250 A. D.

On the introduction of the writings of Aristotle to Western knowledge during the Middle Ages, see the modern works to which cross-references 401are given in the Bibliography under Aristotle. In the present work the attempt is merely made to indicate the dates at which those writings of Aristotle which contained materials of geographic importance became known in Western Europe.