!

O F

TRIGONOMETRY,

PLANE and SPHERICAL:

WITH

The PRINCIPLES of PERSPECTIVE,

AND

PROJECTION of the SPHERE.

By JOHN WRIGHT.

EDINBURGH:

Printed by A. MURRAY & J. COCHRAN.

Sold by A. KINCAID & W. CREECH, W. GRAY, and J. BELL,
Edinburgh; by D. BAXTER, Glasgow; and by other Bookfellers.

MDCCLXXIL

ADE

5-5-47

H N,

Earl of BREADALBANE and HOLLAND,

Viscount of TAY and PAINTLAND,
Lord GLENORCHY, BENDERLOCH,
ORMLIE, and WICK, &c.

As a teftimony of the zeal and prudence with which his Lordship has always studied to promote the intereft of his King and Country, both in the higheft offices, and in a private capacity, and of his esteem for whatever advances science and virtue,

This treatife is infcribed by,

His Lordship's

Most obedient

Humble fervant,

JOHN WRIGHT.