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Entered, according to Act of Congress, in the year 1887, by the
NOTE TO FIRST EDITION.
In presenting this book to the public the writer desires to say that, having in view the great importance of thorough work in land draining, and believing it advisable to avoid everything which might be construed into an approval of half-way measures, he has purposely taken the most radical view of the whole subject, and has endeavored to emphasize the necessity for the utmost thoroughness in all draining operations, from the first staking of the lines to the final filling-in of the ditches.
That\ it is sometimes necessary, because of limited means, or limited time, or for other good reasons, to drain partially or imperfectly, or with a. view only-to temporary results, is freely acknowledged. In these cases the occasion for less completeness in the work must determine the extent to which the directions herein laid down are to be disregarded; but it is believed that, even in such cases, the principles on which those directions are foundedshonld be always home in mind.
None of the principles set forth in the First Edition of this book have been modified by later experience. Some of the processes for the execution of the work have, however, been so much improved as to make a revision necessary.
NOTE TO THIRD EDITION.
It is now twenty years since this book was first written. During this time the extension of the tile drainage of agricultural lands throughout the North and West, and to no little extent throughout the South, has been very great. There are probably more factories for the manufacture of drain tiles in active operation nowthan there were tile-drained farms in 1866.
There has been no modification of methods in practical drainage at all comparahle with its extent. The more important changes have been incorporated with the directions given in the various chapters of this work. Some improvements have been introduced since the publication of the Second Edition in 1879.
Nawroa'r, B. .L, 71887.