sisting or the Logar S o umutid, Lugar Tangents, and Secants, Natural Sines, and various other Tables useful in Business and in Practical Geometry; together with Tables of Compound Interest, Probabilities of Life, and Annuities. Carefully revised and corrected. Stereotype. 8vo. 4s. 6d.

RUDIMENTS of PLANE GEOMETRY, including

GEOMETRICAL ANALYSIS and PLANE TRIGONOMETRY. By Sir John LESLIE, K.H. 8vo. 5s. cloth.

OLIVER & BOYD, Edinburgh ; SIMPKIN, MARSHALL, & Co., London.

Q 451 .SG