INDEX 



Acid, sap, 49 ; vegetable, 75 ; soils, 

 90, 123, 147 ; manures, 147 ; soil 

 water in peaty soils, 183 ; fatty, 



171, 173 

 Adulteration of foods, 180 

 Air, required in germination, li ; 



carbon dioxide in, 22 ; in the soil, 



152 

 Albumen, 272, 285 

 Albuminoid ratio, 206, 218 

 Albuminoids, 66, 70, 71, 125, 169, 



173, 177 



Albumoses, 173 



Alcohol, 75 



Alfalfa, 138, 141, 168, 199 



Alimentary canal, 171 



Alkali land, 139 



Alluvial, soils, 86, 97, 166 ; sub- 

 soils, 95 



Alumina in soils, 94 



Amides, 6, 170, 204 



Amino-acids, 170, 173,204, 276, 286 



Ammonia, absorbed by plants, 51 ; 

 in soil, 93 ; in nitrification, I22> 

 125 ; as a product of putrefaction* 

 125 ; sulphate of, 250 



Analysis, of soil, mechanical, 88 ; of 

 various arable soils, 96 



Antiseptics, 289 



a-proteins, 6 ; converted to protein, 

 66, 70 ; proteins converted to, 71, 

 177 ; in animal food, 175 ; in 

 silage, 177 ; in root crops, 183 

 291 



Artificial manures, 225, 248 ; nitro- 

 genous, 250 ; phosphatic, 254 ; 

 potassic, 257 ; valuation of, 267 ; 

 composition of, 268 



Ash, in plants, 2 ; of crops, com- 

 position of, 55 ; in foods, 169 ; 

 digestion of, 175 



Asparagin absorbed by plants, 51 



Aspect of land, 117 



Assimilation, 25 ; potash required 

 for, 261 



Available, plant food, 151 ; energy 

 converted into mechanical work, 

 198 ; energy of various foods, 

 199 



Azotobacter, 141 



Bacteria, nitrifying, 122, 145 ; 

 putrefactive, 125, 145 ; ammonia 

 producing, 125, 145 ; denitrifying, 

 126, 146 ; aerobic, 129, 146 ; 

 anaerobic, 130, 146 ; nodule, 132 ; 

 nitrogen fixing, 141 ; conditions 

 necessary to growth of soil, 145 ; 

 in intestinal tract, 172, 174 ; in 

 farmyard manure, 228 ; in milk, 

 273 ; cheese, 286 ; in the dairy, 

 288 



Barley, manmial requirements of, 

 162, 263 ; as food, 182 



Barren soils, 99 



Basalt, 78, 80 



Basic slag, 256 



