Note 103 — Chapter XII
Reading edition
See Thucyd. iii. 87. The Athenian army at the commencement of the war consisted of 13,000 heavy armed soldiers of the former class, and 1200 horsemen, including the horse archers, who were not citizens. Such being the mortality of the upper classes, we may safely suppose that a quarter of the whole population perished.—Thucyd. ii. 13.