New Practical Arithmetic;

AN ENTIRELY NEW WORK,

FOR SCHOOLS AND SEMINARIES.

Especial attention is invited to its many

DISTINGUISHING CHARACTERISTICS.

1. The prominence given to the ENUNCIATION of GENERAL PRINCIPLES, (pp. 13, 18, 26, 35, 44, etc.)

2. The simple and clear treatment of NOTATION and NUMERATION. 3. The early introduction of the DECIMAL POINT, (pp. 15, 16,) and the explanation of the values expressed by figures at the right of the point, (p. 52.)

4. EXCHANGE of COMMODITIES, BILLS AND INVOICES, ACCOUNTS, LEDGER COLUMNS, (pp. 72, 78,) and various useful applications, (pp. 142, 178, 186, 187, 202, 263, 212, etc.)

5. The discussion of FACTORING before Multiplication by Factors, (p. 83,) or Division by Factors, (p. 84.)

6. The simplification of DIVISION of Common Fractions. (p. 117,) and of DIVISION of Decimals, (p. 139.)

7. The introduction of COMPOUND DENOMINATE NUMBERS (p. 162,) after Fractions, so as to avoid at least eight special rule: in Reduction, Addition, and Subtraction of Denominate Numbers.

8. The METRIC SYSTEM of WEIGHTS and MEASURES is in its proper place, in the body of the work, (p. 155,) and references made to the same in subsequent parts of the book, (pp. 164, 166, 170, 187, 247, 283, etc.,) as urged by PROF. NEWTON, of Yale College, PRESIDENT HILL, of Harvard University, PROF. HENRY, of Smithsonian Institute, PROF. ROGERS, of University of Pennsylvania, CHANCELLOR CHAUVENET, of Washington University, ST. LOUIS, and others.

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9. The different cases or problems in SIMPLE INTEREST ATɩ treated in orderly connection (pp. 205, 211, 212.)

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10. The improved method of treating MEDIAL PROPORTION, (p. 298,) and the definite illustration of EVOLUTION, (pp. 276, 277.) The presentation of important new topics and applications, as the CENTAL (p. 153,) GOVERNMENT INTEREST, (pp. 205, 210,); Ex amples of INTEREST AT 7% per cent. (pp. 206, 216,); Annual Interest, (p. 219,); NEW VERMONT INTEREST RULE, INTERNAL REVE NUE, (p. 252,); ENGLISH DECIMAL MONEY RECKONING, (p. 258,) etc

12. The avoiding of all that is OBSOLETE, or EXTRANEOUS, as Beer Measure, the Barley Corn, the Nail, Old Currencies, Duodecimals, Permutations, Combinations, etc.

The ANALYTICAL PROCESSES throughout, making written Arithmetic in all its steps intellectual, never before to the same extent attained in any work.

14. The thorough enforcement of educational results, by means of systematic REVIEW QUESTIONS and EXERCISES, (pp. 32, 54, 58, 122, 186, etc.)

TIME SAVING AND LABOR SAVING.

It will be noted that this work with GREENLEAF'S NEW PRIMARY. and NEW ELEMENTARY, or NEW INTELLECTUAL ARITHMETICS, forms a clear, practical, comprehensive system,

COMPLETE IN ONLY THREE BOOKS,

and is believed to be, the cheapest, most convenient and productive, that has ever appeared.

By its use, in comparison with certain crude, overloaded, and long spun out courses, of five or more books, with such catch penny accompaniments, as Table Books, Dictation Cards, Books of Principles, Keys of Answers, Grammar School Editions, etc.. it is safe to say that the learner may not only make better progress, but, at least,

SAVE TWO YEARS OF VALUABLE TIME.

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