Content Description This collection includes a 220 page manuscript written between November 3, 1817 and January 21, 1818 by Henry Foord, along with three enclosures. Hand bound in vellum, the manuscript details a system of geometrical and mechanical mathematics titled "Theorema Arithmetica or the Art of Computation Abbreviated for the Use of Mechanics & etc: Being A Complete Analysis of the Several Rules Necessary to the Acquiring a Competent Knowledge of Arithmetic & Mensuration in Theory and Practice:...