Letters on Astronomy in which the Elements of the Science are Familiarly Explained in Connection with Biographical Sketches of the Most Eminent Astronomers
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LETTERS ON ASTRONOMY, IN WHICH THE ELEMENTS OF THE SCIENCE ARE
Revised Edition.
NEW YORK:
HARPER & BROTHERS, PUBLISHERS,
HARPER & BROTHERS, PUBLISHERS,
ADVERTISEMENT
TO THE
REVISED EDITION.
CONTENTS.
LETTERS ON ASTRONOMY.
LETTER I.
INTRODUCTORY OBSERVATIONS.
LETTER II.
DOCTRINE OF THE SPHERE.
LETTER III.
ASTRONOMICAL INSTRUMENTS.——TELESCOPE.
LETTER IV
TELESCOPE CONTINUED.
LETTER V.
OBSERVATORIES.
LETTER VI.
TIME AND THE CALENDAR.
LETTER VII.
FIGURE OF THE EARTH.
LETTER VIII.
DIURNAL REVOLUTIONS.
LETTER IX.
PARALLAX AND REFRACTION.
LETTER X.
THE SUN.
LETTER XI.
ANNUAL REVOLUTION.—SEASONS
LETTER XII.
LAWS OF MOTION.
LETTER XIII.
TERRESTRIAL GRAVITY.
LETTER XIV.
SIR ISAAC NEWTON.—UNIVERSAL GRAVITATION.—FIGURE OF
THE EARTH'S ORBIT.—PRECESSION OF THE EQUINOXES.
LETTER XV.
THE MOON.
LETTER XVI.
THE MOON.—PHASES.—HARVEST MOON.—LIBRATIONS.
LETTER XVII.
MOON'S ORBIT.—HER IRREGULARITIES.
LETTER XVIII.
ECLIPSES.
LETTER XIX.
LONGITUDE.—TIDES.
LETTER XX.
PLANETS.—MERCURY AND VENUS.
LETTER XXI.
SUPERIOR PLANETS: MARS, JUPITER, SATURN, AND URANUS.
LETTER XXII.
COPERNICUS.—GALILEO.
LETTER XXIII.
SATURN.—URANUS.—ASTEROIDS.
LETTER XXIV.
THE PLANETARY MOTIONS.——KEPLER'S LAWS.——KEPLER.
LETTER XXV.
COMETS.
LETTER XXVI.
COMETS, CONTINUED.
LETTER XXVII.
METEORIC SHOWERS.
LETTER XXVIII.
FIXED STARS.
LETTER XXIX.
FIXED STARS CONTINUED.
LETTER XXX.
SYSTEM OF THE WORLD
LETTER XXXI.
NATURAL THEOLOGY.
LETTER XXXII.
RECENT DISCOVERIES.
INDEX.
RECENT DISCOVERIES.
FOOTNOTES:
Transcriber's Notes
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