[Footnote 34: The most authentic accounts of the two rivers,
the Sihon (Jaxartes) and the Gihon, (Oxus,) may be found in
Sherif al Edrisi (Geograph. Nubiens. p. 138,) Abulfeda,
(Descript. Chorasan. in Hudson, tom. iii. p. 23,) Abulghazi
Khan, who reigned on their banks, (Hist. Genealogique des
Tatars, p. 32, 57, 766,) and the Turkish Geographer, a MS.
in the king of France's library, (Examen Critique des
Historiens d'Alexandre, p. 194 - 360.)]