On pg. 58(if you have the same book..) Mr. Collin starts reading from Fordyce's Sermon. "Other books were produced, and after some deliberation he chose Fordyce's sermons. Lydia gaped as he opened the volume, and before he had, with very monotonous solemnity, read three pages, she interrupted him with :". Mrs. Gilman then says to look up that sermon and see how this allusion tellls more about Mr. Collins character.