CONTENTS 



PAGE 



List of Apparatus for Each Student v 



Weights and Measures vi 



Stock Soils and their Preparation 1 



Collecting Soil Samples 1 



Determination of Capillary Moisture in Soils 4 



Determination of Hygroscopic Moisture in Soils 6 



Effect of Drainage on Temperature of a Soil 8 



Effect of Color on Temperature of a Soil 10 



Determination of Total Moisture in the Same Soil under Different 



Conditions 12 



Determination of the Variation in the Hygroscopic Moisture of Soils 1-4 



Flocculating Effect of Lime IG 



Determination of the Effect of Lime on Plastic Soils 18 



Testing the Tenacity of Moist Soils . 20 



Determinatit)n of Shrinkage in Soils 22 



Determination of the Apparent Specific Gravity of Soils 23 



Determination of Apparent Specific Gravity of Surface Soil under 



Field Conditions . . . 26 



Determination of Real Specific Gravity of Soils 28 



Determination of Porosity (First Method) 30 



Determination of Porosity (Second Method) 32 



Determination of Loss on Ignition 34 



Determination of Humus in Soils 36 



Determination of Conductivity of Heat in Soils 38 



Determination of Specific Heat of Soils 40 



The Power of Loose Soils to retain Capillary Water 42 



The Power of Compact Soils to retain Capillary Water 44 



Effect of Organic Matter on Retention of Capillary Water .... 46 

 Determination of the Rate of Percolation of Air through Soils . .48 



Determination of the Rate of Percolation of Water through Soils . 50 



Effect of a Layer of Organic Matter on Rise of Capillary Water . . 52 



A Study of the Capillary Power of Different Grades of Sand ... 54 



A Study of the Capillary Power of Soils 56 



iii 



