Note (11), page 26.

This is not quite true; the Caliph of Bagdad,—which new town our author calls in his poetical style by the ancient name of Babylon,—could not move from his capital without the consent of the descendents of Seljuk, but they never chose Babylon as the seat of their empire; they had no metropolis, but they preferred Nishapur. Abul Fazel (Ayeen Akbery II. 337) places Bagdad 33, and Babylon 32° 15´ latitude; their longitude is the same; 80° 55´ from the Canary Islands.