ce, and four fair kine convey'd;
And, lest the printed footsteps might be seen,
He dragg'd 'em backwards to his rocky den.
The tracks averse a lying notice gave,
And led the searcher backward from the cave.

"Meantime the herdsman hero shifts his place,
To find fresh pasture and untrodden grass.
The beasts, who miss'd their mates, fill'd all around
With bellowings, and the rocks restor'd the sound.
One heifer, who had heard her love complain,
Roar'd from the cave, and made the project vain.
Alcides found the fraud; with rage he shook,
And toss'd about his head his knotted oak.
Swift as the winds, or Scythian arrows' flight,
He clomb, with eager haste, th' aerial height.
Then first we saw the monster mend his pace;
Fear his eyes, and paleness in his face,
Confess'd the god's approach. Trembling he springs,
As terror had increas'd his feet with wings;
Nor stay'd for stairs; but down the depth he threw
His body, on his back the door he drew
(The door, a rib of living rock; with pains
His father hew'd it out, and bound with iron chains):
He broke the heavy links, the mountain clos'd,
And bars and levers to his foe oppos'd.
The wretch had hardly made his dungeon fast;
The fierce avenger came with bounding haste;
Survey'd the mouth of the forbidden hold,
And here and there his raging eyes he roll'd.
He gnash'd his teeth; and thrice he compass'd round
With winged speed the circuit of the ground.
Thrice at the cavern's mouth he pull'd in vain,
And, panting, thrice desisted from his pain.
A pointed flinty rock, all bare and black,
Grew gibbous from behind the mountain's back;
Owls, ravens, all ill omens of the night,
Here built their nests, and hither wing'd their flight.
The leaning head hung threat'ning o'er the flood,
And nodded to the left. The hero stood
Adverse, with planted feet, and, from the right,
Tugg'd at the solid stone with all his might.
Thus heav'd, the fix'd foundations of the rock
Gave way; heav'n echo'd at the rattling shock.
Tumbling, it chok'd the flood: on either side
The banks leap backward, and the streams divide;
The sky shrunk upward with unusual dread,
And trembling Tiber div'd beneath his bed.
The court of Cacus stands reveal'd to sight;
The cavern glares with new-admitted light.
So the pent vapors, with a rumbling sound,
Heave from below, and rend the hollow ground;
A sounding flaw suc