7 That in a cloud their light did long time stay,
stay > fix; restrain
8 Their vapour vaded, show their golden gleams,
Their > [The clouds', confusing the number; or, perhaps, a variant spelling of "There">[ vaded > [having been] dimmed, withered, hence: having been dispersed (variant of "faded") their > [the beams']
9 And through the azure air shoot forth their perceant streams.
perceant > piercing (I have changed the word-order to follow Collier's suggestion: see Textual Appendix. The syntax of lines 6-9 is confusing, but the intention is clear)
309.21
She also dofte her heauy haberieon,
2 Which the faire feature of her limbs did hyde,
And her well plighted frock, which she did won
4 To tucke about her short, when she did ryde,
She low let fall, that flowd from her lanck syde
6 Downe to her foot, with carelesse modestee.
Then of them all she plainly was espyde,
8 To be a woman wight, vnwist to bee,
The fairest woman wight, that euer eye did see.
1 She also doffed her heavy habergeon,
habergeon > {Sleeveless coat of chain-mail}