Books about Mathematics consider problems that encompass quantity, space, and rates of change, test theories by with mathematical methods, derive statistical models that estimate actual activity to improve our understanding of real phenomena. Titles include: A Brief Introduction to the Infinitesimal Calculus, A Defence of Free-Thinking in Mathematics, A Memoir of the Theory of Mathematical Form, A treatise on the theory and solution of algebraical equations, Algebra Self-Taught, Algebra to Quadratic Equations, Bibliography of Quaternions and Allied Systems of Mathematics, Die Perspektivischen Kreisbilder der Kegelschnitt, Hints for the Solution of Problems in the Third Edition of Solid Geometry, and Partial Differential Equations. An Essay Towards an Entirely New Method of Integrating Them.\n\n