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Part 6It may be proper to ask here how long it may be supposed menmight have the seeds of the contagion in them before it discovereditself in this fatal manner, and how long they might go aboutseemingly whole, and yet be contagious to all those that came nearthem. I believe the most experienced physicians cannot answer thisquestion directly any more than I can; and something an ordinaryobserver may take notice of, which may pass their observations. Theopinion of physicians abroad seems to be that it may lie dormant inthe spirits or in the blood-vessels a very considerable time. Why elsedo they exact a quarantine of those who came into their harbours and...