Title: A treatise of algebra, in three parts. Containing I. The fundamental Rules and Operations. II. The Composition and Resolution of Equations of all Degrees; and the different Affections of their Roots. III. The Application of Algebra and Geometry to each other. To which is added, An appendix, concerning the general properties of geometrical lines. By Colin Maclaurin, M. A. Late Professor of Mathematics in the University of Edinburgh, and Fellow of the Royal Society.