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 of Men lived upon the Earth. The Egyptians firt employ'd this vague and uncertain Method of calculating, when they began to write the Beginning of their Hitory. Thee computed three hundred and forty one Generations from Menes to Sethon; and having no fix'd Æra, they uppos'd three Generations to conit of an hundred Years. In this Manner they computed eleven thouand three hundred and forty Years from Menes's Reign to that of Sethon. Greeks before they counted by Olympiads, follow'd the Method of the Egyptians, and even gave a little more Extent to Generations, making each to conit of forty Years. here both the Egyptians and the Greeks made an erroneous Computation. 'Tis true indeed, that according to the uual Coure of Nature three Generations lat about an hundred and twenty Years: But three Reigns are far from taking up o many. 'Tis very evident, that Mankind in general live longer than Kings are found to reign: So that