THE IRKIGA.TION AGE. 



87 



Ready Now : The Primer of Hydraulics 



By FREDERICK A. SMITH, C.E., Hydraulic Engineer 



This new book is a splendid volume of over 200 pages of 

 absolutely new matter pertaining to the subject of Hydraulics 

 and its allied branches. All the subjects treated of are han- 

 dled in a simple and practical way to make them of use to the 

 men who have been unable to obtain a college education, but 

 who are successful practical men in fields where they require 

 a knowledge of the principles of Hydraulics and instructions 

 how to solve their problems in a simple and satisfactory 

 way. This book is indispensable for anyone engaged in 

 works relating to Hydraulics, Irrigation or Drainage; it 

 is primarily designed for the practical man in the field, 

 but will be equally welcome to the trained Hydraulic 

 Municipal and Railroad Engineer especially, on account of the 

 many valuable tables compiled by the author, which will save 

 a tremendous amount of time in computations. 

 Condensed Table of Contents. 

 General Properties of Matter. 

 Algebraic Principles. 

 Geometrical Principles. 

 Trigonometry. 



Mensuration of Plane Figures. 

 Mensuration of Solids. 

 The Principles of Mechanical Forces. 

 The Three States of Matter. 

 General Hydraulic Principles. 

 The Coefficient of Roughness. 

 How to calculate ;;. 

 Explanation of the "C" Tables. 

 Open Channels Problems. 

 Closed Channels Problems. 

 Pipes Flowing Full Under Pressure. 

 Loss of Head by Enlargement of Channel 

 Subdivisions of Channels. 

 Loss of Head at Entrance to F'ipes. 

 Ditches. 



Ditch Tables and Their Applications. 

 Flow Measurements. 

 The Use of Logarithms. 



Tables. 



Fourteen tables giving the factor C for all cases of chan- 

 nels for a coefficient of roughness ; n varying from 

 008 to .050, inclusive, for channels having a hydraulic- 

 radius from .01 ft. to 900.0 and for slopes varying from 

 0.1 to .000025, thus practically covering every possible 

 condition. 



Tables of square roots of numbers used for r and .?. 

 Table of Hydraulic Elements of the Circle. 

 Table of Hydraulic Elements of Composite Section. 

 Table of Areas and Circumferences of Circles. 

 Table of Hydraulic Equivalents. 



Table of Weights of a Cubic Foot of Various Substances. 

 Conversion Table of United States and Metric Measures 



and Weights. 



Table of Squares, Cubes, Square Roots and Cube Roots. 

 Table of Logarithms. 

 Table of Natural Sines and Cosines. 

 Table of Natural Tangents and Cotangents. 

 Conversion Table, millions of gallons in 24 hours in other 



units. 



Table of sizes of pipes or cylindrical conduits required for 

 the flow of given quantities of water at given veloc- 

 ities. 



Most all ot these taoles have been originated and 

 computed by the author and have been checked in prac- 

 tical work and found to be correct, so that the tables alone 

 will be worth many times the cost of the Dook. 



The price of the book has been placed as low as is 

 consistent with the superior quality of the work and it 

 may be obtained on the following terms: .2.50 a single 

 copy, cloth bound; if order is sent with a new subscrip- 

 tion to Irrigation Age or a renewal subscription, the 

 book will be sent and the Irrigation Age one year for 

 the sum of $3.00. 



Postage is included in the above prices. 



Send in your orders early, so as to receive early attention. 



Send all orders and remittances to 



irrigation Age, 30 N. Dearborn St., Chicago. 



When writing to advertisers please 



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An entirely new system of Labor-saving Table and easy 

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A copy of this work will be mailed to 

 all new or renewal orders to the 

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