CONTENTS. 
Page. 
Introduction 5 
Origin and formation 7 
Physical properties 8 
Mechanical classification 8 
Drainage conditions 9 
Chemical characteristics 10 
Potash 10 
Phosphoric acid 11 
Nitrogen 11 
Peculiar soils 12 
Coral sand soils 13 
Lime-magnesia ratio 13 
Acidity of Hawaiian soils 13 
Ferrous iron 14 
Biological conditions 14 
Nitrification 14 
Ammonification 15 
Soil management 15 
Tillage 15 
Injurious effect of puddling 16 
Rotation of crops 17 
Erosion and drainage 18 
Use of fertilizers 18 
Chemical and mechanical composition of some Hawaiian soils 19 
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