INDEX 



297 



Seed, 6 ; " hard," 9 ; vitality of, 

 13 ; depth of sowing, 13 ; test- 

 ing, 17 



Seed-bed, 18, 108, 113, 241 



Separation of milk, 281 



Sheep, on maintenance diet, 195, 

 197 ; on fattening diet, 195 ; 

 minimum protein requirements, 

 203 ; composition of, 207 



Shoddy, 260 



Silage, digestibility of, 177 



Silica, in plants, 50, 54, 73 ; in soil, 



94 



Silt, deposition of, 83 



Slag, basic, 256 



Soda, in plants, 50 ; in soils, 94 ; 

 nitrate of, 250, 252 



Soil, origin of, 78 ; sedentary, 79 ; 

 of transport, 82 ; motion of the, 

 84 ; chemical constituents of, 93 ; 

 relation to subsoil, 95 ; water, 

 movements of, 100 ; colour of, 

 116; inoculation, 139; chemical 

 composition of the, 149 ; gases, 



153 



Soot, 116, 250, 253 



Souring of milk, 273 



Soya bean cake, 180, 181 



Standard rations, 223 



Starch, in plants, 5, 14, 26 ; iodine 

 test, 14; digestion of, 172; heat 

 value of, 188 ; equivalent, 184, 

 215 ; use of, 219 



Starters, milk, 288 



Stassfurt potash deposit, 257 



Steppe soils, 144 



Stomach, 171 



Stomata, 37 



Stones, growing on arable soils, 84 ; 

 in soil samples, 86 ; check evap- 

 oration, 115 



Storage, of plant food, 60 ; of fats in 

 animal body, 173 ; of protein in 

 animal body, 174 



Store condition, 194, 197 



Straw, digestibility of, 177 ; com- 

 position of, 65, 182 ; food value, 

 191, 199 ; as litter, 228 



Strippings, milk, 278 



Subsoil, 79, 95 ; packing, 113 



Sugars, in plants, 5 ; test for, 15 ; 

 in mangolds and beet, 69 ; in 

 turnips, 71 ; action of yeast on, 

 76 ; digestion of, 171, 174 



Sulphate of ammonia, 250 ; potash, 

 257 



Sulphur, in plants, 50 ; in soil, 94 



Sun, source of heat to soils, 114 



Superphosphate, 158, 255 



Surface tension, 100 ; of soil par- 

 ticles, 105 



Swede turnip, food storage, 69 ; 

 composition of, 71, 182 ; manurial 

 requirements of, 163, 264 



Symbiosis, 133 



Tankage, 259 



Tannins, 75 



Temperature, soils, 1 14 ; dung-heap, 

 230; body, 196 



Test, for starch, 14 ; for sugar, 15 ; 

 seed, 17 ; for carbon dioxide, 

 24 



Texture of soil, 108, 115, 241 

 253 



Thaer, 217 



Thermal energy, 192 



Thomas's phosphate powder, 256 



Tillering, 44 



Tilth, 108, 157, 252 



Transpiration, 36 ; devices to re- 

 duce, 41 



Transport, soils of, 84 



Trees, characteristic, 165, 167, 168 



Trypsin, 173 



Turnips, food storage, 69 ; composi- 

 tion of, 182 



Urea, 174, 187, 202, 229 

 Urine, 174, 203, 225, 229 



