268 ELEMENTS OF AGRICULTURE 



Pag& 



Seed, Germination tests of 153 



Necessity for testing 153 



Adulteration of ■. ■. 153 



Cost of 154 



Deterioration of ■. ,..,.... 155 



Seed leaves ., 35 



Silage. See Ensilage. 



Silica 80 



Silicates 51, 84 



Silicon 51 



Silo 160 



Snow 12 



Sod 168 



Sodium 51 



Carbonate of 52 



Soft Water. See Water. 



Soiling 160 



Soils, Definition of 67 



Formation of 68-70 



Organic matter in 70, 78, 79 



Transported .' 72 



In place '. 73 



Classified 73-76 



Sandy 74 



Clay 74 



Loam 74 



Light 74 



Heavy 74 



Weight of (5 



Warm 75 



Cold 75 



Color of ..." 76 



Water in 78, 88-93 



Inorganic matter in 79 



Plant food in 83 



Phosphorus In : S3, 110-113 



Potash in 84, 113, 114 



Calcium in 84 



Iron in 85 



Analyses of 86 



Deep 92 



Shallow 92 



Nitrogen In 94-98 



Lime in 114 



Loss of water In 100-104 



Loss of fertility 100-116 



Source of water In 102 



Surface evaporation from 103 



Loss of nitrogen In 106-108 



