A New System of Mental Arithmetic is a book written by Daniel Harrison and originally published in 1837. The book is designed to teach arithmetic through mental calculation, rather than relying on written calculations. The book is divided into several sections, each focusing on a different aspect of mental arithmetic, such as addition, subtraction, multiplication, and division. The book includes a variety of exercises and examples to help readers develop their mental arithmetic skills. The book is intended for students of all ages, from elementary school to college, and is designed to be used as a textbook or as a reference guide for teachers and tutors. Overall, A New System of Mental Arithmetic is a comprehensive guide to mental arithmetic that provides readers with the tools they need to become proficient in this important skill.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.