INTRODUCTION.

Ptolemy.

Copernicus.

Tycho brahe.

Galileo.

Kepler.

Isaac Newton.

Flamsteed.

Halley.

Bradley.

William Herschel.

Laplace.

Brinkley.

John Herschel.

The Earl of Rosse.

Airy.

Hamilton.

Le Verrier.

Adams.

LIST OF ILLUSTRATIONS.

The observatory, Greenwich.

Ptolemy.

Ptolemy’s planetary scheme.

Ptolemy’s theory of the movement of Mars.

Thorn, from an old print.

Copernicus.

Frauenburg, from an old print.

Explanation of planetary movements.

Tycho brahe.

Tycho’s cross staff.

Tycho’s “New star” Sextant of 1572.

Tycho’s TRIGONIC sextant.

Tycho’s astronomic sextant.

Tycho’s equatorial armillary.

The great Augsburg quadrant.

Tycho’s “New scheme of the terrestrial system,” 1577.

Uraniborg and its grounds.

Ground-Plan of the observatory.

The observatory of Uraniborg, island of Hven.

Effigy on Tycho’s tomb at Prague. 
  By Permission of Messrs. A. & C. Black.

Tycho’s mural quadrant, Uraniborg.

Galileo’s pendulum.

Galileo.

The Villa Arcetri.

Facsimile sketch of lunar surface by Galileo.

Crest of Galileo’s family.

Kepler’s system of regular solids.

Kepler.

Symbolical representation of the planetary system.

The commemoration of the Rudolphine tables.

Woolsthorpe Manor.

Trinity college, Cambridge.

Diagram of A sunbeam.