For that same knights owne sword this is of yore, xx
Which Merlin made by his almightie art
For that his noursling, when he knighthood swore,
Therewith to doen his foes eternall smart.
The metall first he mixt with Medæwart,
That no enchauntment from his dint might saue;
Then it in flames of Aetna wrought apart,
And seuen times dipped in the bitter waue
Of hellish Styx, which hidden vertue to it gaue.
The vertue is, that neither steele, nor stone xxi