A Complete Treatise on Practical Arithmetic and Book-keeping, Both by Single and Double Entry, Adapted to the Use of Schools. Also, The Principles and Practice of Circulating Decimals, with Their Application to the Computation of Interest, Rules for Interest on Accounts-current, &c. by Olinthus Gregory. 18th Ed., Enl. and Corr. To which is Added, An Appendix, Containing a Variety of Miscellaneous Questions for Examination