MOST OBLIGED, And MOST HUMBLE SERVANT, _JAMES FERGUSON_. THE CONTENTS. CHAP. I. _Of Astronomy in general_ Page 1 CHAP. II. _A brief Description of the_ SOLAR SYSTEM 5 CHAP. III. _The_ COPERNICAN _or_ SOLAR SYSTEM _demonstrated to be 31 true_ CHAP. IV. _The Phenomena of the Heavens as seen from different 39 parts of the Earth_ CHAP. V. _The Phenomena of the Heavens as seen from different 45 parts of the Solar System_ CHAP. VI. _The_ Ptolemean _System refuted. The Motions and Phases 50 of Mercury and Venus explained_ CHAP. VII. _The physical Causes of the Motions of the Planets. The 54 Excentricities of their Orbits. The times in which the Action of Gravity would bring them to the Sun._ ARCHIMEDES’S _ideal Problem for moving the Earth. The world not eternal_ CHAP. VIII. _Of Light. It’s proportional quantities on the 62 different Planets. It’s Refractions in Water and Air. The Atmosphere, it’s Weight and Properties. The Horizontal Moon_ CHAP. IX. _The Method of finding the Distances of the Sun, Moon 73 and Planets_ CHAP. X. _The Circles of the Globe described. The different 78 lengths of days and nights, and the vicissitude of Seasons, explained. The explanation of the Phenomena of Saturn’s Ring concluded_ CHAP. XI. _The Method of finding the Longitude by the Eclipses of 87 Jupiter’s Satellites: The amazing velocity of Light demonstrated by these Eclipses_ CHAP. XII. _Of Solar and Sidereal Time_ 93 CHAP. XIII. _Of the Equation of Time_ 97 CHAP. XIV. _Of the Precession of the Equinoxes_ 108 CHAP. XV. _The Moon’s Surface mountainous: Her Phases described: 124 Her Path, and the Paths of Jupiter’s Moons delineated: The proportions of the Diameters of their Orbits, and those of Saturn’s Moons to each other; and to the Diameter of the Sun_ CHAP. XVI.