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IMPROVED AND ENLARGED.
A PLAIN PRACTICAL SYSTEM
ADAPTED TO THE UNITED STATES.
BY NATHAN DABOLL. ·
By permission of the proprietor of the Copy Right.
DISTRIOT OF CONNECTICUT, ss.
BE IT RÉMEMBERED, That on the twenty1. S.
first day of October, in the thirty-sixth year of the Independence of the United States of America, SAMUEL Green, of said District, hath deposited in this office the title of a Book, the right whereof he claims as Proprietor, in the words following, to wit: Daboll's School. master's Assistant : improved and enlarged. Being a plain practical system of Arithmetic: adapted to the United States. Stereotype Edition. By NATHAN DABOLL."
In conformity to the Act of the Congress of the United States, entitled, “ An Act for the encouragement of learn. ing, by securing the copies of Maps, Charts and Books, to the Authors and proprietors of them during the times therein mentioned."
HENRY W. EDWARDS,
Clerk of the District of Connecticut. A true copy of Record : Examined and sealed by me,
H. W. EDWARDS, Clerk of the Dist. of Conn.
VALE-COLLEGE, NOV, 27, 1799, I HAVE read DABOLL'S SCHOOLMASTER's Assistant, The arrangement of the different branches of Arithmetic is judicious and perspicuous. The author has well ex. plained Decimal Arithmetic, and has applied it in a plain and elegant manner in the solution of various questions, and especially to those relative to the Federal Computation of money. I think it will be a very useful book to Schoolmasters and their pupils.
JOSIAH MEIGS, Professor of
Mathematics and Natural Philosophy. [Since Surveyor-General of the United States.
I HAVE giver, some attention to the work above mertioned, and concur with Mr. Professor Meigs in his opinion of its merit.
NOAH WEBSTER. New Haven, December 12, 1799.
RHODE-ISLAND COLLEGE, NOV. 30, 1799. I HAVE run through Mr. DaBOLL'S SCHOOLMASTER'S Assistant, and have formed of it a very favorable opinion. According to its original design, I think it well “calculated to furnish Schools in general with a method. ical, easy and comprehensive System of Practical Arith metic." I therefore hope it may find a generous patronage, and have an extensive spread.
ASA MESSER, Professor of the Learned Languages, and Teacher of Mathematics:
[President of that Institution,