ON ARITHMETIC: IN WHICH ALL THE RULES ARE EXPLAINED IN EASY AND CONTAINING ALSO, A SHORT HISTORY OF THE COINAGE ; WITH TABLES OF THE WEIGHTS AND MEASURES OF THE ANCIENTS; ADAPTED TO The Use of Ladies' Schools and Private Families, BY MRS. HENRY AYERS, AUTHORESS OF "ADDRESSES TO THE YOUNG." London: SOUTER AND LAW, SCHOOL LIBRARY, 131, FLEET STREET. PREFACE. IN submitting the following pages to the public, the writer does not make any pretensions to new discoveries in the science of Arithmetic; nor does she wish in any way to depreciate the value of those works already written upon the subject, in order to claim superiority for her own. The design of the present Work is only to simplify, and render agreeable and pleasing to children, a study which is frequently looked upon as tedious and incomprehensible, and therefore only regarded with feelings of dread and dislike. The object of education amongst ladies in the present day, in too many instances, appears |