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PRACTICAL ARITHMETIC.

THE

PRACTICAL ARITHMETIC,

WITH

NOTES AND DEMONSTRATIONS

TO THE

PRINCIPAL RULES,

IN WHICH THE

PRINCIPLES AND PRACTICE OF THAT SCIENCE

ARE RENDERED FAMILIAR,

AND PRACTICALLY ADAPTED TO THE USE OF

PRIVATE AND PUBLIC SCHOOLS.

BY

JOHN DARBY,

TRAFALGAR STREET ACADEMY, LEEDS,

AUTHOR OF THE

STUDENT'S ALGEBRA,” AND “A KEY TO THE ALGEBRAICAL

PROBLEMS OF THE REV. DR. BLAND, LATE FELLOW AND TUTOR

OF ST. JOHN'S COLLEGE, CAMBRIDGE.

LONDON:

WHITTAKER & CO., AVE-MARIA-LANE ;
OLIVER AND BOYD, EDINBURGH ; H. W. WALKER, LEEDS ;

MOZLEY AND SONS, DERBY ;
AND MAY BE HAD ON ORDER OF ALL BOOKSELLERS.

MDCCCXLIII.

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TO THE

REV. JOSEPH HOLMES D.D.

LATE FELLOW AND TUTOR OF QUEENS' COLLEGE, CAMBRIDGE,

NOW HEAD MASTER OF THE LEEDS FREE GRAMMAR SCHOOL,

IN ADMIRATION OF

HIS UNDOUBTED ATTAINMENTS IN SCIENCE AND LITERATURE,

HIS HIGH MORAL BEARING,

AND GENERAL COURTEOUS DEMEANOUR,

THIS TREATISE ON ARITHMETIC

IS,

WITH PROFOUND RESPECT,

INSCRIBED,

BY HIS MOST OBLIGED AND MOST OBEDIENT SERVANT,

JOHN DARBY.

Trafalgar Street Academy,

Leeds, January 2nd, 1842.

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