WELLS'

MATHEMATICAL SERIES.

Academic Algebra.

University Algebra.

Plane Geometry.

Plane and Solid Geometry.

Plane and Spherical Trigonometry.

Logarithms (flexible covers).

Elementary Treatise on Logarithms.

Special Catalogue and Terms on

application.

ELEMENTS OF GEOMETRY.

BY

WEBSTER WELLS, S.B.,

ASSOCIATE PROFESSOR OF MATHEMATICS IN THE MASSACHUSETTS

INSTITUTE OF TECHNOLOGY.