INDEX. 



149 



PAGE 

 Equations, chemical .... 12 



Erigenia 63 



Evaporation from soil .... 110 



Excretion 138 



Exposure of manure .... 94 



F. 



Farm, care of 92 



Farm manure 90 



nature of 90, 91 



Fat, animal 115 



in food 119 



varieties of .... 115, 116 



Feed, true cost of 132 



Fermentation of manure ... 92 



Fertile soil 77 



Fertility 37 



maintained 79 



reduced by weeds .... 102 



Fertilizers 77 



artificial 83 



prepared 85 



Fiber in foods 120 



of wood 70 



Fibrous roots 63 



Flow of sap 65, 72 



Flowers 73 



Fogs 47 



Food of plants 60, 65 



Food, purposes of ... 116, 117 

 digestible parts of .... 122 

 quantity profitable . . . 124 



variety of 129 



Foods, composition of . . 118, 121 

 double value of ... 131, 132 

 manurial value of . . 129, 130 



true cost of 132 



value of 122 



G. 



Germ of seeds 54 



Germination 57 



Glaciers 34 



Glands, salivary 133 



Glass 22 



Granite 22 



soil from 79 



Graphite 23 



PAGE 



Gravelly soil 38 



Growth, of roots 63 



of plants ...... 68, 69 



Guano 85 



Gullet, the 135 



Gum arabic ....... 12 



Gypsum 13, 87, 88 



Hail 47 



Hard pan 31 



Harrowing, purposes of ... 106 



thorough 106 



Health of animals 139 



Heat, effect of 16 



animal 117 



in germination 58 



Herbivorous animals .... 114 



Hills 32 



formation of 29, 30 



worn away by winds ... 35 



Hoed crops, cultivation of . . 107 



Humus 35 



Hydrochloric acid . . . 11-13, 22 



Hydrogen 20 



Ice, effect of, upon soil .... 32 



Impurities of the atmosphere . 42 



Indian corn, roots of .... 64 



mixture of 74 



Insects, avoided by rotation . . 112 



Intestines, the 133 



length of 133 



Iron 125 



Kidneys, the 

 Kindness to animals 



138 

 140 



Lacteals, the 134 



Leguminous plants 62 



Lime 12, 13, 19, 41, 86 



benefit of, in soil .... 87 

 Limestone 23, 32, 37 



