An ephemeris for the year 1656 [electronic resource] : being bissextile, or leap year : rationally predicting the most remarkable affairs probably to happen this present year : with monethly [sic] observations and astrological judgments upon what diseases are also conjectured to reign with directions to young students for to cure the same / left perfect in the study of Nich. Culpepper ; and now published by Tho. Harrington.