Final answer:
The provided excerpts do not correspond with the novel 'Wuthering Heights', and as such, an accurate answer to the student's question regarding Edgar's letter cannot be given without proper context.
Step-by-step explanation:
Summary of Wuthering Heights focuses on a person Heathcliff, who is a mysterious gypsy-like person. Heathcliff rises in the family who had adopted him and then he was reduced to the status of a servant there. Further, he ran away from the young woman whom he loved very much and decided to marry another.
The student asked about a stipulation Edgar makes in his letter to WH at the conclusion of Chapter 24. The given excerpts do not match the narrative of Wuthering Heights, but based on the context of the question, the subject is likely referring to a component of the novel.
In Wuthering Heights, there is no character named Edgar who writes a letter to WH in Chapter 24, as the characters and plot details in the excerpts provided do not align with the novel's storyline. Therefore, without the appropriate context or reference from the novel itself, it's not possible to accurately provide an answer to this question.