Final answer:
The provided excerpts do not include a description of black silk stockings by Mrs. Sommers; therefore, it is not possible to accurately answer the question based on the given text.
Step-by-step explanation:
The question pertains to the depiction or the description of the black silk stockings within a literary context, since none of the provided excerpts explicitly describe Mrs. Sommers or any other character's perception of black silk stockings, it would be incorrect to fabricate an answer. It's imperative to carefully read and analyze the text to correctly identify if and how Mrs. Sommers described the black silk stockings, and since none of the excerpts mention her doing so, we cannot provide an accurate description.