Let the reckoning be reduced to the course of nature, by putting the Reigns of Kings one with another, at about eighteen or twenty years a-piece: and the ten Kings of _Sparta_ by one Race, the nine by another Race, the ten Kings of _Messene_, and the nine of _Arcadia_, above mentioned, between the Return of the _Heraclides_ into _Peloponnesus_, and the end of the first _Messenian_ war, will scarce take up above 180 or 190 years: whereas according to Chronologers they took up 379 years. For confirming this reckoning, I may add another argument. _Euryleon_ the son of _Ægeus_, [24] commanded the main body of the _Messenians_ in the fifth year of the first _Messenian_ war, and was in the fifth Generation from _Oiolicus_ the son _Theras_, the brother-in-law of _Aristodemus_, and tutor to his sons _Eurysthenes_ and _Procles_, as _Pausanias_ [25] relates: and by consequence, from the return of the _Heraclides_, which was in the days of _Theras_, to the battle which was in the fifth year of this war, there were six Generations, which, as I conceive, being for the most part by the eldest sons, will scarce exceed thirty years to a Generation; and so may amount unto 170 or 180 years. That war lasted 19 or 20 years: add the last 15 years, and there will be about 190 years to the end of that war: whereas the followers of _Timæus_ make it about 379 years, which is above sixty years to a Generation. By these arguments, Chronologers have lengthned the time, between the return of the _Heraclides_ into _Peloponnesus_ and the first _Messenian_ war, adding to it about 190 years: and they have also lengthned the time, between that war and the rise of the _Persian_ Empire. For in the Race of the _Spartan_ Kings, descended from _Eurysthenes_; after _Polydorus_, reigned [26] these Kings, _Eurycrates_, _Anaxander_, _Eurycratides_, _Leon_, _Anaxandrides_, _Clomenes_, _Leonidas_, &c. And in the other Race descended from _Procles_; after _Theopompus_, reigned [27] these, _Anaxandrides_, _Archidemus_, _Anaxileus_, _Leutychides_, _Hippocratides_, _Ariston_, _Demaratus_, _Leutychides_ II. &c. according to _Herodotus_. These Kings reigned 'till the sixth year of _Xerxes_, in which _Leonidas_ was slain by the _Persians_ at _Thermopylæ_; and _Leutychides_ II. soon after, flying from _Sparta_ to _Tegea_, died there. The seven Reigns of the Kings of _Sparta_, which follow _Polydorus_, being added to the ten Reigns above mentioned, which began with that of _Eurysthenes_; make up seventeen Reigns of Kings, between the return of the _Heraclides_ into _Peloponnesus_ and the sixth year of _Xerxes_: and the eight Reigns following _Theopompus_, being added to the nine Reigns above mentioned, which began with that of _Procles_, make up also seventeen Reigns: and these seventeen Reigns, at twenty years a-piece one with another, amount unto three hundred and forty years. Count these 340 years upwards from the sixth year of