CONTENTS. 



CHAPTER I. 



INTRODUCTION. 



PAGE 



The Drainage Engineer — The Agriculturist and Soil Drainage .... I 



CHAPTER II. 



SOILS. 



Origin of Soils — Transported Soils — Alluvial Soils — Sedentary Soils 

 — Organic Matter of the Soil — Kinds of Soils — Each Soil an 

 Individual — Drainage Properties of Soils and Sub-soils —Water 

 of the Soil —Water of the Soil that is Used by Plants — Experi- 

 mental Investigations— Soil Structure — Capillary Movement of 

 Water — Effect of Fertilizers upon Soil Moisture — Percolation 

 through Frozen Ground — Heaving of Soils — Conservation of 

 Soil Moisture 12 



LAND DRAINAGE PRACTICE. 



Drainage Practice— Underdrainage — ^Plane of Saturation — Sources 

 of Water Affecting the Soil —Systems of Tile Drains — Principles 

 to be Used in Locating Drains — Data Required for Locating 

 Drains ,.,,.,.. 35 



CHAPTER IV. 



LEVELLING AND TOPOGRAPHY. 



Levelling—Levelling Instruments — Taking Levels — ^Drainage Topo- 

 graphy — The Preliminary Survey — ^With Boundary Line as 



