Book 2 — CHAPTER I
Reading edition
SCIENCE IN THE DARK AGE
(1) (p. 4). James Harvey Robinson, An Introduction to the History of Western Europe, New York, 1898, p. 330.
(2) (p. 6). Henry Smith Williams, A Prefatory Characterization of The History of Italy, in vol. IX. of The Historians' History of the World, 25 vols., London and New York, 1904.