394 



INDEX 



in relation to live weight increase, 



210; rations, 217; manure value 



of, 243 

 Frost, distribution of plants by, 47 ; 



disintegration of rocks by, 81 ; 



valleys specially liable to, 117 

 Fuel value of food, 187 

 Fungi in the soil, 147 



Gases, soil, 153 



Gastric juice, 171, 173 



Gelatin from bones, 254 



Germination, conditions necessary 

 to, 9 



Gluten, 6, 65 ; meal, 181, 183 



Glycerin, 271 



Glycogen, 173 



Grain, the filling of the, 63 



Granite, 78, 80 



Grass, composition of meadow, 4 ; 

 land, manures for, 265 ; character- 

 istic, 164, 165, 167 



Gravel, deposition of, 82, 83 



Greaves, 259 



Growth, elements necessary to plant, 

 5 1 ; changes of composition during, 

 59 ; temperature required for, 114 



Guanos, 257 



Hay, growth and ripening of 

 meadow, 68 ; digestibility of, 177 ; 

 composition of, 182 ; heat value 

 of, 189 ; dynamic value of, 194, 

 199 ; place in diet, 194 ; values, 

 Thaer, 217 ; manures for, 265 



Heat value of foods, 188 



Heating of soils, 114, 116 



Heavy soils, 97, 1 18 



Hellriegel, on transpiration, 38 ; 

 and Wilfarth on nitrogen fixation, 

 132 



Hoeing, 112 



Hops, 74 



Horse, fed upon straw, 191 ; on 

 maintenance diet, 194, 197 ; avail- 



able energy of various foods fed 

 to the, 199 ; energy requirements 

 of working, 200 ; minimum pro- 

 tein requirements, 203 



Humus, 86 ; soluble in alkalis, 

 87 ; in subsoil, 95 ; product of 

 cellulose fermentation, 129, 130; 

 value of, 241 



Hydrochloric acid, solvent action on 

 soils, 94 ; in stomach, 175 



Hydrogen, 173, 187 



Ice as a transporting agency, 84 

 Inoculation of nodule organisms, 



132, 139 

 Intestines, 171, 176 

 Iron, in plants, 50 ; in rocks, 80 ; in 



soils, 94 



Kainit, 159, 257 



Kellner, on fuel values, 188, 191 ; 

 on the maintenance of store 

 bullocks, 197 ; energy require- 

 ments of working horses, 200 ; 

 standard rations, 223 



Kelp, 257 



Kephir, 273 



Kidneys, 174, 202 



King on transpiration, 38 



Koumiss, 273 



Lactation, period of, 277 



Lactic acid, 273, 283, 285 



Lactose, 269, 272 



Lawes and Gilbert, 255 ; on trans- 

 piration, 38 ; on the composition 

 of farm animals, 207 



Leaf, work of the, 19 ; starch forma- 

 tion in the, 26 ; removal of, 34 ; 

 stomata in, 37 ; the fall of 

 the, 73 



Lean meat, 1 74, 189, 209 



Leguminous crops, 54, 132, 135 ; 

 plants and soils, 164, 165, 168 



Light, assimilation and, 24, 26 ; 

 soils, 98, 116, 118 



