A complete system of practical arithmetic for the use of schools in British America; to which are added a set of book-keeping by single entry, and a practical illustration of mental arithmetic, federal money, receipts, inland and foreign bills of exchange, mensuration, etc. The whole adapted to the business of real life, to the circumstances of the country, and to the present improved state of commerce by G. & J. Gouinlock, formerly British teachers of long experience and extensive practice; authors of a Key to the arithmetic, a System of general geography, &c.