302 



INDEX 



PAGE fAGK 



i-ilrns, water. 37, 38 Manure, amount to apply 224 



water, in soil 37 Erf system of preserving 212 



Fish dried and ground 232 green 289 



Food, available, small 66 handling 217 



forms of plant 64 influenced by bedding 209 



how used by plant 50 jnfluenced by feed 207 



increased 92 influenced by stock 209 



supply large 87 in rotation 277 



Frost in soil-making n large mound 219 



Glacier soils 15 losses through year 264 



Grain vs. dairying 255 methods of applying 218 



Grass lands . 28 never neglect 287 



soil analysis 27 objections to hand scattering.. . 219 



Growth affected by soil 28 preservatives 214 



Gypsum 99, i oo preserving 211 



Harrow, function of 192 small piles of 218 



kinds of..... 193 solid and liquid 210 



Hay vs. dairying 263 spreader for 220 



Heat assists soil-making 10 waste and wash of 263 



Hellriegel 109, 114, 139 water in 206 



Humus affects water flow 40 when to apply 222 



effect of decaying 95 where to apply 223 



effect on soils 30 Markham quoted 297 



holds plant food 66 Marl 99 



in soil, get 286 Metals of plant growth 58 



Husbandry, horse-hoeing 90 Mississippi action on soils 13 



Hydrogen defined 54 Moisture in soil-making 10 



function of 55 Molasses illustrates osmosis 47 



Ice helps soil-making 14 Mulching, benefits of 173 



Improvement, first steps in 283 Mulch, making effective 174 



Inoculation by pure culture.... 149 Nature slow worker 90 



by soaking seed 148 New Hampshire manure experi- 



by soil 148 ments 225 



essentials 151 Nitrification defined 126 



methods of 147 essential 128 



what it means 144 when favored 75 



Intensive farming 296 Nitrogen defined 55 



Iron defined 61 fixation 109, 135, 140 



Kames quoted 266 fixed in soil 135 



Kainit 237 function of 56, 118, 227 



Laboratory defects 73 gathered by tubercles 137 



Lawes & Gilbert 112, 137 how lost 133 



Leaves secure food 45 increased by legumes 85 



wither to save water 50 losses of 122, 133 



Legume farmer, be a 295 more needed 136 



function of 114 preventing losses of 134 



grow constantly 287 reclaiming 134 



increase nitrogen 85 secured by inoculation 150 



necessary in rotation 273 sources of 119, 230 



secure nitrogen 136 where secured 45 



Liebig in, 112 North Carolina corn yield 274 



Lime affects soil particles 103 Oats, analyses of plant food.. 80, 81 



applying 105 Ohio station manure experiments 217 



corrects acidity 104 manure experiments ..225, 263 



function of 101 Organic matter modifies soils.... 35 



gas 101 Osmosis defined 47 



kinds used 99 Oxygen defined 53 



promotes good texture 102 function of 54 



quantity to use 106 in soil-making 9 



Lime-spreader 106 where secured 45 



Liming 99 Packing, sub-surface 182 



when to practice 75 Phosphorus defined 57 



Litmus 104 function of S7. 22 8 



Machinery preferred 297 sources of 45, 233 



Magnesium defined 60 Potash defined 5& 



Manure, accumulative effect of. . 225 function of 60 



