ARGUMENT. THE NIGHT-ADVENTURE OF DIOMED AND ULYSSES. Upon the refusal of Achilles to return to the army, the distress of Agamemnon is described in the most lively manner. He takes no rest that night, but passes through the camp, awaking the leaders, and contriving all possible methods for the public safety. Menelaus, Nestor, Ulysses, and Diomed are employed in raising the rest of the captains. They call a council of war, and determine to send scouts into the enemies' camp, to learn their posture, and discover their intentions. Diomed undertakes this hazardous enterprise, and makes choice of Ulysses for his companion. In their passage they surprise Dolon, whom Hector had sent on a like design to the camp of the Grecians. From him they are informed of the situation of the Trojan and auxiliary forces, and particularly of Rhesus, and the Thracians who were lately arrived. They pass on with success; kill Rhesus, with several of his officers, and seize the famous horses of that prince, with which they return in triumph to the camp. The same night continues; the scene lies in the two camps. All night the chiefs before their vessels lay, And lost in sleep the labours of the day: All but the king: with various thoughts oppress'd,(215) His country's cares lay rolling in his breast. As when by lightnings Jove's ethereal power Foretels the rattling hail, or weighty shower, Or sends soft snows to whiten all the shore, Or bids the brazen throat of war to roar; By fits one flash succeeds as one expires, And heaven flames thick with momentary fires: So bursting frequent from Atrides' breast, Sighs following sighs his inward fears confess'd. Now o'er the fields, dejected, he surveys From thousand Trojan fires the mounting blaze; Hears in the passing wind their music blow, And marks distinct the voices of the foe. Now looking backwards to the fleet and coast, Anxious he sorrows for the endangered host. He rends his hair, in sacrifice to Jo