An Easy Introduction to Practical Gunnery, Or, The Art of Engineering. Containing, I. Decimal Arithmetic, Extration of Roots. II. Mensuration of Planes and Solids, and the Computation of the Strength of Timber Joints, &c. III. The Computation of Balls and Shells. IV. The Necessary Theorems in Geometry, Demonstrated in a Very Plain and Easy Way. V. The Nature and Use of Logarithms. VI. Plane Trigonometry in All Its Cases; with the Method of Taking Heights and Distances, and at One Station. VII. Gunnery, where the Cases are Solved by Addition and Subtraction Only, with Numeral Examples, the Rules in Words at Length, for Those who are Unacquainted with the Elements of the Higher Geometry. VIII. The Theory of Projectiles. IX. Tables and Experiments of Cannons and Mortars, with Some Observations. X. The Solution of a Difficult Problem to Find the Velocity of a Bullet, Shot from Any Piece of Artillery. XI. The Necessary Tables of Gunnery. Illustrated with Copper Plates. By F. Holliday, Master of the Free Grammar School at Haughton Park, Near Retford, Nottinghamshire