_Hipparchus_ the great Astronomer, comparing his own Observations with those of former Astronomers, concluded first of any man, that the Equinoxes had a motion backwards in respect of the fixt Stars: and his opinion was, that they went backwards one Degree in about an hundred years. He made his observations of the Equinoxes between the years of _Nabonassar_ 586 and 618: the middle year is 602, which is 286 years after the aforesaid observation of _Meton_ and _Euctemon_; and in these years the Equinox must have gone backwards four degrees, and so have been in the fourth Degree of _Aries_ in the days of _Hipparchus_, and by consequence have then gone back eleven Degrees since the _Argonautic_ Expedition; that is, in 1090 years, according to the Chronology of the ancient _Greeks_ then in use: and this is after the rate of about 99 years, or in the next round number an hundred years to a Degree, as was then stated by _Hipparchus_. But it really went back a Degree in seventy and two years, and eleven Degrees in 792 years: count these 792 years backward from the year of _Nabonassar,_ 602, the year from which we counted the 286 years, and the reckoning will place the _Argonautic_ Expedition about 43 years after the death of _Solomon_. The _Greeks_ have therefore made the _Argonautic_ Expedition about three hundred years ancienter than the truth, and thereby given occasion to the opinion of the great _Hipparchus_, that the Equinox went backward after the rate of only a Degree in an hundred years. _Hesiod_ tells us that sixty days after the winter Solstice the Star _Arcturus_ rose just at Sunset: and thence it follows that _Hesiod_ flourished about an hundred years after the death of _Solomon_, or in the Generation or Age next after the _Trojan_ war, as _Hesiod_ himself declares. From all these circumstances, grounded upon the coarse observations of the ancient Astronomers, we may reckon it certain that the _Argonautic_ Expedition was not earlier than the Reign of _Solomon_: and if these Astronomical arguments be added to the former arguments taken from the mean length of the Reigns of Kings, according to the course of nature; from them all we may safely conclude that the _Argonautic_ Expedition was after the death of _Solomon_, and most probably that it was about 43 years after it.