Why is it standard for a book's notes / bibliography to be placed at the very end of the book, while only a small minority of books place each chapter's notes at the end of each respective chapter? I ask because the few books I read with end-chapter notes listed after each chapter make it so muc...

I've recently been studying Jane Austen's Pride and Prejudice, however this line confuses me: "Her mind was less difficult to develop" I'm aware that Mrs Bennet is less intelligent than her husband (this line is talking about her) - however surely if her mind was less difficult to develop, then...