The sovereigns of Bythinia and Macedon were the most persevering in their attacks. A siege by the latter is rendered memorable by a circumstance connected with it. Philip sat down before the city, and attempted to take it by surprise. A dark night was selected for the purpose, when it was hoped the citizens could not be prepared to resist the concealed and sudden attack. The moon, however, appeared to emerge from the black sky with more than common brilliancy, and illumined distinctly every object around the city. The obscure assailants were thus unexpectedly exposed to view, and discovered; and the citizens, now upon their guard, easily repulsed them. Grateful for this seasonable and supposed miraculous interference of the goddess, the Byzantines adopted Diana as their tutelar deity, and depicted her under the form of a crescent. By this emblem she is represented on the coins of the city, still extant, with the legend ΒΥΣΑΝΤ ΣΩΤ, implying that she was the “_saviour of Byzantium_.” This emblem of the ancient city was adopted by Constantine, when he transferred hither the seat of empire, and it was retained by the Turks, like many other representations, when they took possession of it. The crescent therefore is still its designation, not as a Mohammedan, but a Byzantine emblem. After many struggles, with more powerful nations, to maintain its independence, Byzantium attracted the attention of the Romans. In the contests of the different competitors for the empire, the possession or alliance of this city was of much importance, not merely on account of its power and opulence, but because it was the great passage from Europe to Asia. It was garrisoned by a strong force, and no less than five hundred vessels were moored in its capacious harbour. When Severus and Niger engaged in hostilities, this city adhered to the latter, many of whose party fled thither, and found a secure asylum behind fortifications which were deemed impregnable. Siege was laid to it by the victorious Severus, but it repelled all his assaults for three years. Its natural strength was increased by the skill of an engineer named Priscus, who, like another Archimedes, defended this second Syracuse by the exercise of his extraordinary mechanical powers. When it did yield, it fell not by force, but famine. Encompassed by the great Roman armies on every side, its supplies ware at length cut off, as the skill of the artist was incapable of alleviating the sufferings of starvation. By the cruel and atrocious policy of the most enlightened ages of the pagan world, the magistrates and soldiers were put to death without mercy, for their gallant defence, to deter others from similar perseverance; and to destroy for ever its power and importance, its privileges were suppressed, its walls demolished, its means of defence taken away; and in this state it continued, an obscure village, subject to its neighbours the Perenthians, till it was