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Plainfeld Academy, April 20, 1802 DARQLL's SchoolMASTER's Assistant on Arithmetic, and think it the best cal [pose of any which has fallen within my JOHN ADAMS,
Rector of Plainfield Academy f Philips' Academy, Andover
ca Academy, (Mass.) Dec. 10, 1807. I Mr. DABOLL's System of Arithmetic
, 10 judgment displayed in his method, of his explanations, and thinking it as isive a system as any with which I
am erfully recommend it to the patronage SAMUEL WHITING,
Teacher of Mathematics
The design of this work is to furnish the se United States with a methodical and comprehe of Practical Arithmetic, in which I have e through the whole, to have the rules as concis liar as the nature of the subject will permit.
During the long period which I have devot struction of youth in Arithmetic, I have made u systems which have just claims to scientific m authors appear to have been deficient in a paint--the practical teacher's experience. Th too sparing of examples, especially in the firs in consequence of which, the young pupil is hur the ground rules too fast for his capacity. T I have endeavoured to obviate in the followin
In teaching the first rules, I have found courage the attention of scholars by a variet familiar stions, which might serve to stre minds as their studies grew more arduous.
The rules are arranged in such order as to inost simple and necessary parts, previous to are more abstruse and difficult.
To enter into a detail of the whole work dious; I shall therefore notice only a few pa refer the reader to the contents.
Although the Federal Coin is purely de nearly allied to whole numbers, and so absolu to be understood by every one, that I have immediately after addition of whole num] shown how to find the value of goods thereir after simple multiplication; which may be o tage to many, who perhaps will not have an learning fractions.
In the arrangement of fractions, I have to new method, the advantages and facility sufficiently apologize for its not being are
medy, Teacher of Mathematics. ced with DABOLL'S SCHOOL MASTER'S ar 1802, and ou examining it attensive preference to any other system -ly adopted it for the pupils under my at time have used it exclusively in the great advantage and improves well as the ease and assistance of deem it equally well calculated for Is in private instruction, and think labour and ingenuity of the author v approval and recommendation,
ROGER KENNEDY , 1811.
Bart Brod Cha Com Con Coli Dis
systeins, As decimal fractions may be learned much easier
I have therefore placed a few problems in Fractions, according to the method above hinted; and after going through the principal mercantile rules, have treated upon Vulgar Fractions at large, the scholar being now capable of going thrqugh them with advantage and ease.
In Simple Interest, in Federal Money, I have given several new and concise rules ; some of which are particularly dorigned for the use of the compting-house.
The Appendix contains a variety of rules for casting Interest, Rebate, &c. together with a number of the most bany and useful problems, for measuring superficies and solids, examples of forms commonly used in transacting business, useful tables, &c. which are designed as aids in the common business of life.
Perfect accuracy, in a work of this nature, can hardly ha expected ; errors of the press, or perhaps of the author, inay have escaped correction. If any such are pointed out, it will be considered as a park of friendship and fayour, ly
The public's most humble
TABLE OF CONTENTS
al fractions may be learned much easier
may learn decimals, which will be nę
rules ; some of which are particularly
Pernutation of Quaalities.
. together with a number of the most
in a work of this nature, can hardly
Ic's most humble
Questions for Exercise,
of Currencies, do, of Coin,
showing the amount of 11. annuity, forborne for 31 years
of English and Portuguese Gold, do. do. 223
ods of Dinone.
incies, do, of Coin,
20 Hundreds of Mlelong.