I'm 95% sure it's free verse since there is no definite rhyme scheme.
There are many critics sharing their ideas and opinions about Whitman's decision in using free verse to support his themes. They think that this is to create a unique style of writing that blends journalism with music, oratory, and other cultural influences to transform American poetry.
Explanation:
it mean capable of being .eg enjoyable:
can enjoy.
What does the term mean pier glass mean?
pier glass is a large high mirror especially : one designed to occupy the wall space between windows. — called also pier mirror.