Further Remarks on the Period of Infection in Epidemic Diseases

on Poisons", published in 1702, calls attention to the long period of latency in rabies. In " A Discourse on the Plague"" (London, 1720), he shows that sudden seizures should be attributed not to fright but to infection, and says " contagion is a real poison"; the whole argument as to contagion is as fully stated as in any recent discussions on cholera or typhus. He is among the first to remark that the practice of inoculation " shows that the small-pox does not break forth before