Front matter

Transcriber’s Note

This book uses a number of astronomical symbols, including signs of the Zodiac (♈, ♉, ♊, ♋, ♌, ♍, ♎, ♏, ♐, ♑, ♒, ♓), and symbols for planets (☿, ♀, ⊕, ♂, ♃, ♄). If these characters do not display correctly, you may have to use an alternative font, such as Arial Unicode MS or DejaVu.

The ORRERY, made by JAMES FERGUSON.

N. 1. The Sun, 2. Mercury, 3. Venus, 4. The Earth, 5. The Moon, 6. The Sydereal Dial plate, 7. The Hour Circle, 8. y^e Circle for y^e. Moon’s Age, 9. The Moon’s Orbit, 10. y^e Pointer, Shewing the Sun’s Place & Day of the Month, 11. The Ecliptic, 12. The Handle for turning y^e whole machine

J. Ferguson inv. et delin.

G. Child. Sculp.

ASTRONOMY EXPLAINED UPON Sir ISAAC NEWTON’s PRINCIPLES, AND MADE EASY TO THOSE WHO HAVE NOT STUDIED MATHEMATICS.

By JAMES FERGUSON.

Heb. XI. 3. The Worlds were framed by the Word of GOD.

Job XXVI. 13. By his Spirit he hath garnished the Heavens.

THE SECOND EDITION.

LONDON:

Printed for, and sold by the AUTHOR, at the Globe,

opposite Cecil-Street in the Strand.

MDCCLVII.

TO

THE RIGHT HONOURABLE

GEORGE Earl of Macclesfield,

Viscount PARKER of Ewelme in Oxfordshire,

AND

Baron of Macclesfield in Cheshire;

PRESIDENT of the Royal Society of LONDON,

Member of the Royal Academy of Sciences at PARIS,

OF THE

Imperial Academy of Sciences at Petersburg,

AND ONE OF THE

Trustees of the British MUSEUM;

DISTINGUISHED

By his Generous ZEAL for promoting every

BRANCH of USEFUL KNOWLEDGE;

THIS

Treatise of ASTRONOMY

IS INSCRIBED,

With the Most Profound Respect,

By His LORDSHIP’s

Most Obliged,

And

Most Humble SERVANT,

JAMES FERGUSON.