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, II ; 



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, 17 1 



Alkali land, 1 39 



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, 1221 

 125 ; as a product of putrefactiom 

 X25 ; 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, i8$ 



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, 133 ; 

 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, manurial requirements of, 

 162, 263 ; as food, 182 



Barren soils, 99 



Basalt, 78, 80 



Basic slag, 256 



