A new prognostication for the year of our Lord, 1691. Being the third year after bissextile or leap-year, and from the creation of the world, 5640. Exactly calculated according to art, for the meridian of the most famous city of Edinburgh, whose latitude is 55 d. 54 m.¹/₂. and longitude is 11 d. 37 m. / By G. S. Philomath.