A practical essay on typhous fever

"Smith's most important work was his Practical Essay on Typhus [typhoid] Fever in which he gives a clear clinical description of the disease and recommendations for its treatment. He believed typhoid fever was a self-limited disease. At the time typhus fever and typhoid fever were not yet distinguished, but the Smith's experience would have been likely to have been with typhoid fever, a water-borne disease, rather than typhus, transmitted by lice and associated with crowded unsanitary places like army camps and jails"--Medicine at Yale, 1701-1901 (website).