Again, In regard of the measure of time by months and years, there will be no small difficulty; and if we shall strictly consider it, many have been and still may be mistaken. For neither the motion of the Moon, whereby months are computed; nor of the Sun, whereby years are accounted, consisteth of whole numbers, but admits of fractions, and broken parts, as we have already declared concerning the Moon. That of the Sun consisteth of 365 daies, and almost 6 hours, that is, wanting eleven minutes; which 6 hours omitted, or not taken notice of, will in process of time largely deprave the compute; and this is the occasion of the Bissextile or leap-year, which was not observed in all times, nor punctually in all Common-Wealths; so that in Sixty three years there may be lost almost 18 daies, omitting the intercalation of one day every fourth year, allowed for this quadrant, or 6 hours supernumerary. And though the same were observed, yet to speak strictly a man may be somewhat out in the account of his age at Sixty three, for although every fourth year we insert one day, and so fetch up the quadrant, yet those eleven minutes whereby the year comes short of perfect 6 hours, will in the circuit of those years arise unto certain hours; and in a larger progression of time unto certain daies. Whereof at present we find experience in the Calender we observe. For the _Julian_ year of 365 daies being eleven minutes larger then the annual revolution of the Sun, there will arise an anticipation in the Æquinoxes; and as _Junctinus_ [SN: Comment. in Sphæram Ioh. de Sacro bosco.] computeth, in every 136 year they will anticipate almost one day. And therefore those ancient men and Nestors of old times, which yearly observed their nativities, might be mistaken in the day; nor that to be construed without a grain of Salt, which is delivered by _Moses_; At the end of four hundred years, even the self same day, all the host of _Israel_ went out of the land of _Egypt_. For in that space of time the Æquinoxes had anticipated, and the eleven minutes had amounted far above a day. And this compute rightly considered will fall fouler on them who cast up the lives of Kingdoms, and sum up their duration by particular numbers; as _Plato_ first began, and some have endeavoured since by perfect and spherical numbers, by the square and cube of 7 and 9 and 12, the great number of _Plato_. Wherein indeed _Bodine_[SN: Mat. Histor.] hath attempted a particular enumeration; but (beside the mistakes committible in the solary compute of years) the difference of Chronology disturbs the satisfaction and quiet of his computes; some adding, others detracting, and few punctually according in any one year; whereby indeed such accounts should be made up; for the variation in an unite destroys the total illation.