ADVERTISEMENT.

The extensive sale of Walkingame's Tutor's Assistant, and the approbation it has received from Teachers in general, have caused several ni".\ editions to issue from the press;—all of which have their respecthe merits: too many attempts therefore cannot be made to render a work of this kind, not only suitable for a Text-book, but also practical as regards the matter it contains.

It is a complaint generally made against youths, when first entering a counting-house, that they were ignorant of the shorter and more practical methods of calculating, attempting to reduce every thing to their own standard, or rule in some arithmetic ; hence their operations are lengthy and tedious, and frequently produce uncertain results. To obviate thia evil is the object of the present work. The writer has added a complete system of Mental Arithmetic, calculated to draw forth the thinking powers of the pupil, and to lit him for that promiscuous mode of calculation necessarily connected with tho counting-house, and other business transactions.

Various practical methods for calculating Interest are also appended, with remarks on the nature of Proportion illustrated by numerous examples, additional rules, tables, &c.

The editor of this edition of Walkingame wishes to combine theory with practice, having found by experience that it is a thorough knowledge of the fundamental parts, or first principles of figures, and a perfect acquaintance with slate arithmetic, united with that of Mental Ci'.l-enlations, which form the complete arithmetician.

The whole has been revised, and collected into one volume; and as it contains the same as the best edition of Walkingame it is presumed that so much additional matter, partly original, and partly selected, will render it a desirable text-book, and also ro"onin)fiinl it to public notice.

January, 1841.