[5.] peopled with sweet airs. Filled with sweet music.
[6.] antenatal dream. See Wordsworth's "[Ode on the Intimations of Immortality]" (also, note 13, page [47]).
"Our birth is but a sleep and a forgetting."
[7.] Lucifer. Venus when seen in the morning, rising before the sun is called Lucifer, the light-bearer. From Lat. lux, light, and fero, to bear (see note 18, page [189]). The same star when seen in the evening, following the sun, is called Hesperus.
[8.] blue oceans of young air. Explain.
[9.] paramour. See Milton's "Ode on the Nativity," stanza i.
"It was no reason then for her
To wanton with the sun, her lusty paramour."
Milton makes the sun the paramour of the earth; Shelley, the earth the paramour of the sky.