Speculum anni à partu virginis MDC XLV. or An almanack for the yeare of our Lord God 1645: [electronic resource] : Being the next after bissextile or leap-year. Wherein is contained a probable conjecture of the temper of the foure seasons, all the lunations, planetary configurations, celestiall observations, & astrological predictions concerning the weather in every moneth of this yeare. Calculated properly for the famous universitie and town of Cambridge, where the pole is elevated 52. degr. 17. min.