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LONGMANS' SCHOOL MENSURATION

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HARVARD COLLEGE LIBRARY

+ x2 17 PRE FACE

MENSURATION is so important a subject, and its results are of such practical utility in everyday life, that the ordinary course of arithmetic often is, and always should be, followed by the addition of rules and exercises on the subject.

The following pages, it is hoped, will supply a want frequently felt by those who have had experience in teaching the subject; and this book will be found to differ from those manuals most generally used in the following particulars :

(a) Except in one or two unimportant cases, where a knowledge of the higher mathematics is necessary, a simple proof of every rule is given which can be easily mastered by all students who have a good knowledge of arithmetic and an elementary knowledge of algebra and geometry.

(6) The diagrams illustrating the various figures and solids are very numerous, and have been carefully prepared with a view to elucidate the text.

(c) In addition to a very large number of examples at the end of each section, several sets of examination papers have been introduced at convenient stages.

(d) A set of very easy questions has been inserted at the end. These can be used either for mental work, rapid revision, or as easy exercises for beginners.

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