Jane writes: "I hope Huxham is a comfort to you; I am glad you are taking it."

According to Chapman's notes, Huxham is named for "John Huxham, physician (1692 - 1798) whose tincture of cinchona bark is in the Bitish Pharmacopoeia." I wonder why Cassandra was using this medicine -- a quick google search indicated that it might be used in treating fever.