Swan. A new almanack for the year of our Lord God 1683 : Being the second after bissextile or leap-year, and from the creation of the world at the spring 5686 years compleat. Wherein is shewed the principal aspects of the planets, a table of annuities and reversions, the terms both at London and Cambridge, with other things of note in the University. Calculated properly for the famous University and town of Cambridge, where the pole is elevated 52 deg. and 17 min. above the horizon.