ON

MECHANICAL GEOMETRY,

CHIEFLY EXPLANATORY OF A SET OF

SCHEMES and MODELS,

1 BY WHICH

The knowledge of the most useful propofitions of
EUCLID, and other celebrated Geometricians, may
be clearly and expeditiously conveyed, even to youth
of an early age.

By BENJAMIN DONNE,
Mafter of the Mechanics in Ordinary to
His MAJESTY.

Quicquid in aftronomicis, geographicis, vel, nauticis
efficiendum; geometria attribuendum eft.

BRISTOL: Printed for and fold by the Author.

Sold in LONDON by Meffis. VERNOR and HOOD, Book-
fellers, Birchin-Lane, Cornhill; and by the following
Mathematical Inftrument Makers: Mr. ADAMS and
Mr. TROUGHTON, Fleet-Street, and Mr. JONES,
Holborn.

Price with the Apparatus Two Guineas and a Half.

1796.

TO

THE MOST NOBLE

JAMES

MARQUIS of SALISBURY,

KNIGHT OF THE GARTER,

LORD CHAMBERLAIN OF HIS

MAJESTY'S HOUSEHOLD, &c.

This Attempt to render the Introduction to the important Science of

GEOMETRY

Both perfpicuous and entertaining, is in gratitude for favours received, respectfully inscribed,

by

HIS LORDSHIP'S

moft humble and

obedient Servant,

BENJAMIN DONNE.

BRISTOL, September 12, 1796.