Note 57 — Chapter VII
J. S. (John Selby) Watson translation
"These canals however flowed, not from the Tigris into the Euphrates, but from the Euphrates into the Tigris, as is shown not only by Herodotus, Diodorus, Arrian, Pliny, Ammianus, but by later writers." Kühner. But "the difference in the level of the rivers is so slight that —— it is probable that by merely altering the diagonal direction of a canal, the waters could be made to flow either way; certainly so at certain seasons." Ainsworth, p. 89.