Final answer:
Metaphors in literature are identified through phrases where something is compared to another to add meaning, such as 'Rima the bird girl' and 'An infant sleeping's a milky sea.'
Step-by-step explanation:
The subject of the question pertains to identifying a metaphor within a literary text. Metaphors are figures of speech in which a word or phrase is applied to an object or action to which it is not literally applicable.
One example provided in the passages is 'Rima the bird girl', from the second excerpt. The metaphor describes a character, Rima, as both a human and a bird simultaneously, invoking imagery of freedom, natural beauty, and elusiveness.
Another notable metaphor is found in the poem by Laura Kasischke, where 'An infant sleeping's a milky sea'. This creates a peaceful and gentle image of a vast, soothing sea, comparing it to the innocence and tranquility of a sleeping child.