What was the Greek Fire? how compounded? how used? how propelled? does the world of today know the secret of Greek Fire? Gibbon says: “The historian who presumes to analyze this extraordinary composition should suspect his own ignorance and that of his Byzantine guides, so prone to the marvelous, so careless, and, in this instance, so jealous of the truth. From their obscure, and perhaps fallacious, hints it should seem that the principal ingredient of the Greek Fire was the naphtha, or liquid bitumen, a light, tenacious, and inflammable oil, which springs from the earth, and catches fire as soon as it comes in contact with the air. The naphtha was mingled, I know not by what methods or in what proportions, with sulphur and with pitch that is extracted from evergreen firs. From this mixture, which produced a thick smoke and a loud explosion, proceeded a fierce and obstinate flame, which not only rose in perpendicular ascent, but likewise burnt with equal vehemence in descent or lateral progress; instead of being extinguished, it was nourished and quickened by the element of water; and sand or vinegar were the only remedies that could damp the fury of this powerful agent, which was justly denominated by the Greeks the _liquid_ or the _maritime_ fire. For the annoyance of the enemy it was employed, with equal effect, by sea and land, in battles or in sieges. It was either poured from the rampart in large boilers, or launched in red-hot balls of stone and iron, or darted in arrows and javelins, twisted round with wax and tow, which had deeply imbibed the inflammable oil; sometimes it was deposited in fire-ships, the victims and instruments of a more ample revenge, and was most commonly blown through long tubes of copper which were planted on the prow of a galley, and fancifully shaped into the mouths of savage monsters, that seemed to vomit a stream of liquid and consuming fire.” The paralyzing effect of fear let loose among a multitude of men has decisively determined many a battle. When the Romans saw elephants for the first time, and saw them too, in the midst of Pyrrhus’ hostile hosts bearing down upon them--those brave world-conquerors promptly turned and fled. Chariots armed with scythes madly rushing down upon a body of infantry, were used with success by the Britons against Cæsar’s terrified legions. And Greek Fire, Byzantium’s secret for four hundred years, infused such enduring terror into the hearts of the nations that had taken part in that night attack upon Constantinople, that this remembering fear, rather than the effective force of Byzantium, may be said to have saved Christendom.