A Treatise on the Plague and Yellow Fever / With an Appendix, containing histories of the plague at Athens in the time of the Peloponnesian War; at Constantinople in the time of Justinian; at London in 1665; at Marseilles in 1720

The work surveys historical outbreaks of the true plague, tracing recorded devastations and examining theories about origins, climatic and moral influences, and the nature of contagion. It analyzes symptoms and medical histories, considers evidence and debate over transmissibility, and reviews recommended measures for prevention and clinical management. A second part addresses yellow fever with a comparative account of symptoms and causes, contested views on contagion, recommended preventive practices and treatments, and a selection of notable case reports. An appendix gathers classical and later plague narratives and practitioners’ responses to queries, illustrating social effects and public-health responses.