Final answer:
The excerpts illustrate themes from the Romantic period, highlighting emotions, nature, and the individual experience, as seen in works by authors like Arthur Symons. They also delve into the role of the reader in experiencing poetry.
Step-by-step explanation:
The poem Siren Song, although not provided in the excerpts, typically addresses themes from Greek mythology, particularly the alluring and dangerous song of the Sirens who tempted sailors to their doom. These excerpts, however, seem to broadly represent the Romantic period through their exploration of emotions, nature, and the sublime. The Romantic period is characterized by an emphasis on emotion and individualism, a glorification of nature, and a focus on the senses and imagination. Authors like Arthur Symons and others from this era often personified natural elements to convey depth of emotion and the inner turmoil of the human experience. The question on Shelley also brings in an additional layer of reader interaction and the role of the reader in poetry, which is itself a subject of interest within English literature studies.