A new almanacke and prognostication for the yeare of Our Lord God 1644. [electronic resource] : Being the bissextile or leap-yeere. : Wherein is shewed the naturall inclination of the aire, according to the aspects and positions of the stars; with other rules, tables, and directions, convenient in such a worke to be noted. : Calculated exactly for the meridian and latitude of Ongar in Essex, where the pole is elevated above the horizon 52 deg. 23 min. and may without sensible error serve any part of this kindome. / By Samuell Ashwell.