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STANDARD

PRACTICAL

PLUMBING:

AN EXHAUSTIVE TREATISE ON ALL BRANCHES OF

PLUMBING CONSTRUCTION

INCLUDING

DRAINAGE AND VENTING, VENTILATION, HOT AND
COLD WATER SUPPLY, AND CIRCULATION

THE WORK SHOWS THE LATEST AND BEST PLUMBING
PRACTICE, SPECIAL ATTENTION BEING GIVEN TO THE
SKILLED WORK OF THE PLUMBER, AND TO THE THEORY
UNDERLYING PLUMBING DEVICES AND OPERATIONS

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A SPECIAL FEATURE: 347 ORIGINAL ILLUSTRATIONS, EACH
ONE BEING DRAWN EXPRESSLY FOR THIS WORK

NEW YORK

The Norman W. Henley Publishing Company

2 WEST 45th STREET

MARVARD UNIVERSITY

DIVISION OF EDUCATION

BURZAU OF VOCATIONAL CUIDANCE

HARVARD COLLESE LIBRANY

TRANSFERRED FROM THE

LIBRARY OF THE

BRADUATE SCHOOL OF EDUCATION

1941

COPYRIGHTED, 1910, BY

THE NORMAN W. HENLEY PUBLISHING COMPANY

PREFACE

In general, the writing of works such as that which the author herewith presents, is accompanied by several features the effect of which is to materially lessen the excellent results which such a work should produce.

One of the errors to which we allude, is the tendency of the author on trade subjects to write in too technical a manner, that is, to handle his subject in such a manner that none but the most educated of his readers are able to thoroughly grasp the principles - presented.

For instance, since the plumber is seldom to be found who can handle an algebraic equation, it would certainly seem far better to present a necessary principle by means of arithmetic rather than by means of algebra, and if there is no other way than by means of algebra the author should see to it that he fully explains the entire operation at length, in such a manner that the reader who has not had the advantage of instruction in such branches may be able to grasp the subject. In other words, the author should stand in the same position to his readers that the teacher does to his pupils. It is his duty to honestly instruct, and not merely to fill his pages with facts which, though valuable, are presented in such a manner as not to be easily understood by the average reader.

A second serious though unintentional error on the part of many authors is the omission of minor details. While to the author, who is naturally a man of experience and education in his special line of work, the statement of simple, and to him obvious, facts seems a matter of foolishness, ofttimes, to many of his younger and more inexperienced readers, the statement of these simple things is a matter of utmost importance, and a means of establishing the main principle more strongly in their minds.

The author of this work frankly confesses to surprise at the absence of knowledge of rudiments which he knows from long

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