TABLE OF CONTENTS. 



Piiije. 



Quantity of Water Needed t 5 



Water Available to Crops 6 



Percolation Apparatus g 



Description of Soils : n 



Eainfall 14 



Percolation Water 16 



Effect of Soil Type on Percolation and Evaporation 23 



Effect of Cultivation upon Evaporation and Percolation 25 



Effect of Sulphate of Potash and Manure on Percolation 29 



Quantity of Nitric Nitrogen Percolating 41 



Nitrates from Manure 42 



Percolation from Nitrates 45 



Percolation of Potash 46 



Phosphoric Acid 48 



Lime 48 



Acknowledgment 50 



Summary and Conclusions 50 



