The elements of Euclid, viz. the first six books, together with the eleventh and twelfth. ... Also, the book of Euclid's data, in like manner corrected. By Robert Simson, ... To this edition are also annexed, elements of plane and spherical trigonometry.
Euclid.
Glasgow : printed and sold by Andrew Foulis; sold also by Robert Cross; James Duncan, Dunlop and Wilson, and by J. and W. Shaws,
1781.
'The elements of plane and spherical trigononmetry' has separate titlepage, pagination and register.
ESTC
Gaskell, P.  Foulis Press,