The Errors, by which THEON, or others, have long ago
vitiated these Books, are corrected,
And fome of EUCLID'S Demonftrations are reftored.
meritus Profeffor of Mathematics in the University of Glasgow.
EDINBURGH:
rinted for J. NOURSE, London, and J. BALFOUR, Edinburgh.
M,DCC,LXXXI.