Famous mineral spring used to cure ailments. https://www.visittunbridgewells.com/

18th century England obsessed over the health benefits of the seaside, especially as a cure for tuberculosis. This fascination led to the creation of resort towns, which later spread from England to the new world.

https://www.theatlantic.com/health/archive/2013/08/the-historic-healing-power-of-the-beach/279175/

The partner of a surgeon is, in this context, the apothecary. Apothecaries were able to legally dispense medicine while surgeons could legally perform operations.

https://books.google.com/books?id=Gm-N_969uekC&dq=surgeon+and+partner+jane+austen&source=gbs_navlinks_s

1. spasmodic: characterized by spasms or convulsive twitches
2. pulmonary: relating to lungs
3. septic: putrefactive, putrefying
4. billious: Affected by too great a secretion of bile, or from bilious derangement
5. rheumatic: containing mucous or watery secretions

www.oed.com

erroneous