Typhoeus > (Another name for Typhon, a fearsome giant who contended with the gods) gin > engine [of torture], rack (a long table with a roller at each end to which the ankles and wrists were attached by ropes)

8 Theseus, condemned to endless sloth by law;

Theseus > (Condemned for helping Pirithous in his attempt to abduct Proserpine; he was bound to the Chair of Forgetfulness, but was eventually rescued by Hercules. See Aen. 6.617-8)

9 And fifty sisters water in leaky vessels draw.

fifty sisters > (The Belides or Dana{i"}des, daughters of Dana{u"}s, condemned endlessly to draw water in sieves. They killed their bridegrooms, the fifty sons of Aegyptus; strictly, only forty- nine sisters were thus condemned, since one of their number, Hypermnestra, spared her husband. In the interests of scansion, Spenser wisely overlooks this detail. See Virgil's Gnat 393-6)

105.36

They all beholding worldly wights in place,
2 Leaue off their worke, vnmindfull of their smart,
To gaze on them; who forth by them doe pace,
4 Till they be come vnto the furthest part:
Where was a Caue ywrought by wondrous art,
6 Deepe, darke, vneasie, dolefull, comfortlesse,
In which sad {AE}sculapius farre +a part+
8 Emprisond was in chaines remedilesse,
For that Hippolytus rent corse he did redresse.

7 a part > apart 1590, 1609

1 They all, beholding worldly wights in place,

worldly > mortal wights > creatures, people in place > there