THE ES

RS BY WHICH THEON OR OTHERS HAVE LONG AGO
VITIATED THESE BOOKS, ARE CORRECTED,

And some of Euclid's Demonftrations are restored.

ALSO

THE BOOK OF

Euclid's Data,

IN LIKE MANNER CORRECTED.

BY ROBERT SIMSON, M. D.

ENLAITIS PROFESSOR OF MATHEMATICS IN TAL UNIVERSITY OF GLASOOW.

To this TENTH EDITION are also annexed,

Elements of Plain and Spherical Trigonometry.

Dublin :
Printed by P. WOGAN, No. 23, Old-Bridge.

1803.