Gravar-mail: Reports of the Pestilential Disorder of Andalusia, Which Appeared at Cadiz in the Years 1800, 1804, 1810, and 1813; with a Detailed Account of That Fatal Epidemic, as It Prevailed at Gibraltar during the Autumnal Months of 1804; Also Observations on the Remittent and Intermittent Fever, Made in the Military Hospitals at Colchester, after the Return of the Troops from the Expedition to Zealand in 1809