[Footnote 2: For this first siege of Constantinople, see Nicephorus, (Breviar. p. 21, 22;) Theophanes, (Chronograph. p. 294;) Cedrenus, (Compend. p. 437;) Zonaras, (Hist. tom. ii. l. xiv. p. 89;) Elmacin, (Hist. Saracen. p. 56, 57;) Abulfeda, (Annal. Moslem. p. 107, 108, vers. Reiske;) D'Herbelot, (Bibliot. Orient. Constantinah;) Ockley's History of the Saracens, vol. ii. p. 127, 128.]