Or, the Principles and Practice of Gauging Beer, Wine, and Malt. Containing I. Decimal Arithmetick, the Extraction of the Square and Cube-Roots, and the Use of Them, in the Way of Gauging. II. The Necessary Problems in Geometry Relating Gauging and Measuring. III. The Use of the Sliding-Rule in Measuring Timber, and Other Surfaces and Solids. IV. The Theory and Practice of Gauging in All the Varieties, Perform'd by Pen and Sliding-Rule. Each Proposition Being Wrought in Beer, Wine, and Malt. V. The Construction of the Table of Segments, and All the Varieties of Ullaging of Casks. VI. A Table of Areas in Malt-Bushels, &c. The Whole Laid Down More Methodically Than Any Performance of this Nature Yet Extant. By Mr. John Dougharty, Teacher of the Mathematicks at Worcester