Note 081 One of these dykes, which produces an artificial cascade or cataract, is described by Tavernier (part i. 1. ii. p. 226) and Thevenot (part ii. 1. i. p. 193). The Persians, or Assyrians, laboured to interrupt the navigation of the river (Strabo, 1. xvi. p. 1075 [p. 740]. D'Anville, l'Euphrate et le Tigre, p. 98, 99).

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The History Of The Decline and Fall Of The Roman Empire— Chapter 24