264 ELEMENTS OF AGRICULTURE 



Page. 



Free water in soils 90 



Frost 29 



Gases 14 



Germination 37, 153 



Glaciers 73 



Grain crops 157-159 



Grasses : . . . 165 



Green Fodder. See Fodder. 



Manure 146 



Ground water 91 



Gypsum 129 



Hail 12 



Hard pan 122 



Hard water 20 



Hawks. See Birds of Prey. 



Hay, Classes of 165 



Curing 166 



Of grasses 165 



Of legumes 166-168 



Time for cutting .166, 168 



Heat 10 



Herbivorous animals 196 



Humates 114 



Humus 70, 79, 107, 111, 113, 114, 115 



Hydrogen , 26 



Indian Com. See Corn. 



Inorganic matter of soils 70, 79 



Insects, Damage by 222 



Eaten by birds 223-225 



Irish potato 173 



Iron, Properties of 52 



In soils 85 



Iron and aluminum phosphate 84 



Irrigation T 118, 119 



Kainit 136 



Kaolin 81 



Land 67 



Land plaster 129 



Leaching 19 



Leaves 42 



Leguminosse Plants, Fixation of nitrogen by 96 



For hay 166 



For manure 146 



Life in the soil 115 



