cely did his foe assail,

Wherewith > With which

4 And double blows about him stoutly laid,

stoutly > boldly, bravely, resolutely

5 That glancing fire out of the iron played,

That > [So that]

6 As sparkles from the anvil use to fly,

use to > observe as a custom; _hence:_ customarily, do

7 When heavy hammers on the wedge are swayed;

wedge > {Blacksmith's tool held in tongs and used on an anvil for
cutting red-hot iron; also: ingot of gold or silver}
swayed > swung

8 Therewith at last he forced him to untie

Therewith > With that

9 One of his grasping feet, him to defend thereby.

him > [himself, the dragon]

111.43

The other foot, fast fixed on his +shield+
2 Whenas no strength, nor stroks mote him constraine
To loose, ne yet the warlike pledge to yield,
4 He smot thereat with all his might and maine,
That nought so wondrous puissance might sustaine;
6 Vpon the ioynt the lucky steele did light,
And made such way, that hewd it quite in twaine;
8 The paw yet missed not his minisht might,
But hong still on the shield, as it at first was pight.

1 shield > shield, _1609_

1 The other foot, fast fixed on his shield,

fast > firmly

2 When no strength, nor strokes, might him constrain
3 To loose, nor yet the warlike pledge to yield,

loose > loosen

4 He smote thereat with all his might and main,

main > force, strength

5 That naught so wondrous puissance might sustain;

so > such
puissance > power, strength
sustain > endure

6 Upon the joint the lucky steel did light,

light > strike; fall, alight

7 And made such way, that hewed it quite in twain;

that > [that it]
twain > two

8 The paw yet missed not his minished might,

his > [the paw's or the dragon's]
minished > reduced, diminished

9 But hung still on the shield, as it at first was pight.

as > [just as]
pight > pitched, placed; _hence:_ held, held down, held in place

111.44

For griefe thereof, and diuelish despight,
2 From his infernall fournace forth he threw
Huge flames, that dimmed all the heauens light,
4 Enrold in duskish smoke and brimstone blew;
As burning _Aetna_ from his boyling stew
6 Doth belch out flames, and rockes in peeces broke,
And ragged ribs of mountaines molten new,
8 Enwrapt in coleblacke clouds and filthy smoke,
That all the land with stench, and heauen with horror choke.