Finally, we must remember that there is an abundant supply of naphtha in the neighbourhood of Peshawur,[204] and that the practice of throwing incendiary missiles was universal in Asia long before the battle in question. The Ka’aba, as we have seen, was burnt down by incendiaries in 683, and this tremendous event of course became instantly known all over Islam. At the battle of Alor, 712, the Moslems specially prepared incendiaries to repulse the attacks of the elephants. Igneous projectiles were employed by Harun er-Reshid in 805 at the siege of Heraclea. The last day of the siege of Baghdad, 813, is described by the poet Ali as “a day of fire”: “the machines played from the hostile camps ... and fire and ruin filled Baghdad.”[205] So well known were incendiary shell in Persia at the close of the tenth century that Firdusi mentions them in the episode of Nushirvan and Porphyry: “The Romans began the fight from the gates and discharged arrows and pots (of fire).”[206] In 1067 Shems al-Mulk Nasr, when besieging Bokhara, ordered incendiaries to be discharged against some archers posted in the minaret of the Grand Mosque. The wooden roof of the minaret took fire, the sparks fell upon the main building, and in the end the whole mosque was burned down.[207] We may rest assured, then, that the words Ferishta wrote in his account of the battle near Peshawur, 1008, were _naphtha_ and _arrow_, not _musket_ and _cannon_. Far from possessing muskets in the ninth century, there is no evidence to show that the Arabs had firearms, that is, arms charged with an explosive, during the whole of the Crusade period, 1097-1291. So strange and deadly an agent of destruction as gunpowder could not possibly have been employed in the field without the full knowledge of both parties; yet no historian, Christian or Moslem, alludes to an explosive of any kind, while all of them carefully record the use of incendiaries. The Arab accounts of these campaigns will be found collected together in M. Reinaud’s _Extraits des Historiens Arabes relatifs aux guerres des Croisades_, Paris, 1829; the Christian accounts are scattered in various volumes; but they teach us no more than we have learnt already in the two preceding chapters about incendiaries and Greek fire: “les projectiles incendiaires ont pu rester à peu près les mêmes pendant toutes ces Croisades.”[208] At the siege of Nice, first Crusade, we read of the Saracens throwing balls of pitch, oil and fat against the machines of the Christians.[209] Fire-arrows bearing pitch, wax, sulphur, and tow were discharged from the walls of Jerusalem during the siege in the same Crusade.[210]