In which the Propofitions are demonstrated in a new and
fhorter Manner than in former Tranflations, and the
Arrangement of many of them altered,

To which are annexed

N

IYAD, E

BY

Plain and Spherical Trigonometry, Tables of Logarithms from
I to 10,000, and Tables of Sines, Tangents, and Secants,
Natural and Artificial.

GEORGE

DOUGLAS,

Teacher of Mathematics in the Academy at Ayr.

EDINBURGH;

Printed for the AUTHOR, and fold by C. ELLIOT, Edinburgh,
and RICHARDSON and URQUHART, London.

M,DCC,LXXVI.