Fever (Google Books ⧉, Amazon ⧉, Bookshop ⧉)

Middlemarch

…but since he did not mean to marry for the next five years—his more pressing business was to look into Louis' new book on Fever, which he was specially interested in, because he had known Louis in Paris, and had followed many anatomical demonstrations in order to ascertain the specific differences of typhus and typhoid.