INDEX 



PAGE PAGE 



Acidity corrected 104 Cultivation, depth of 201 



detected 104 destroys weeds 199 



Acid-made manures, when to use 75 saves water 172 



helps soil-making 9 shallow and deep 201 



Air in soils 36 time for 203 



Aluminum defined 61 Cultivators, kinds of 199 



Analyses, early faith in 71 Culture, level 203 



average soils 66 Dairying, a balance in fertility.. 261 



crops 80 and wheat compared 257 



determine soil needs 71 enriches land 260 



fail to determine fertility 72 makes fat 257 



mechanical 30 remakes soil 258 



numerous, necessary 75 vs. grain 255 



should be extensive 75 Decay in soil-making ig 



show condition of plant food.. 76 Denitrification 123 



subsoil 76 Disking, value of 180 



typical soils 27 Ditch, digging the 162 



value of 74 Drain, kind of 159 



Animals in soil-making 20, 21 Drainage, admits air 154 



Barley, analyses of plant food objection to open 160 



80, 81 outlet, protect 1 63 



Barn-yards, good and bad 211 tiles the perfect 161 



Berthelot 114 admits air 1 54 



Blood, dried 231 assists manure 154 



Bone 235 assists tillage 156 



Boussingault 112 deepens soil 152 



Calcium denned 60 function of 152 



Calcium in good supply 101 lengthens season 156 



Capacity of soils to hold water.. 42 prevents drouth 157 



Carbon defined 56 prevents washing 158 



dioxide in soil-making 9, 10 sanitary effect of 159 



function of 56, 118 warms soil 155 



secured by leaves 45 where not needed 159 



where secured 45 Drains, depth of 162 



Cellulose defined 50 distance between 161 



Chlorine defined 58 Drift soils 15 



function of 58 tlements, constructive 118 



Circulation, air 36 defined 52 



water 36 how . used S3 



Classification of soils 25 r of P' 3 " 48 --- Y""J" tt 



Clay soil analysis 27 Evaporation by sun and wind.. 166 



c^SWv::::::::: i' 1&&KE% 



Conn quoted" '.'.'. , Fertility defined 5 



Corn, analyses' of 'plant food". '.80', 81 n'ore Than" soil! :.' ...V. 8 . 5 .' ^5 



tM. dairying 263 not found by analysis 72 



soil analysis.... .. 27 Fertilizer, amount to use 251 



yield in North Carolina 274 analyses . . 243 



Cotton vs dairying 263 percentages 254 



Cotton-seed meal 232 problems 252 



Crops, better 292 factory mixed 239 



demands for food 81 homo mixing 246 



diversifying 294 test land for 249 



for various soils 31 value of 241 



Cultivation checks evaporation.. 167 Field tests essential. ........... 78 



