4 8 4 



INDEX 



Atmosphere, soil, 51. 

 Available energy, 420. 

 Availability of plant food, 181. 



Bacteria, 205. 



classes, 208. 



destroyed by ozone, 49. 



in air, 49. 



in animals, 394. 



in manure, 286. 



soil, 205. 

 Bacteriods, 222. 

 Bagasse, 369. 

 Barium in plants, n. 

 Barley, depth of rooting, 104. 

 Basalt, 65. 

 Bat guano, 297. 

 Bile, 303. 

 Biotite, 151. 

 Blood, 296. 

 Bone black, 304. 

 Bone meal, 304. 

 Boron in plants, n. 

 Buckwheat, water culture, 12. 

 Butter, volatile acids of, 472. 



Cabbage, fertilizer for, 345. 

 Calcareous soils (see lime), 186. 

 Calcium cyanamid, 45, 295. 

 Calcium, essential to plants 13. 

 Caliche, 294. 

 Calorimeter, 377. 



respiration, 415. 

 Calorie, 377. 

 Calves, feeding, 459. 

 Cane sugar, 368. 

 Capillary action, 140. 



moisture, 129. 

 Carbohydrates, 361, 410. 



digestion of, 395. 



effect on digestion, 404. 



effect on milk production, 470. 



form fat, 440. 



Carbohydrates, used in work, 455. 

 Carbon balance, 413. 



Carbon bisulphide, effect on soil, 



233. 



Carbon circulation, 39. 

 Carbon dioxide in air, 36. 



in soil, 51, 59. 



solvent action, 39. 



sources, 37. 



test for, 36. 



weathering by, 57, 58. 

 Carbon of food, use, 416. 

 Carbonate of lime, effect on soil 

 texture, 87. 



solubility, 58. 



effect on tilth (see lime), 90. 

 Carnallite, 309. 

 Cattle, feeding young, 460. 

 Cells, 197. 

 Cellulose, 373. 

 Cereals, fertilizing, 324. 

 Chabazite, 152. 

 Chlorine for plants, 14. 

 Chlorite, 153. 

 Chlorophyll, 39, 360. 

 Citric acid, 376. 



in soil, analysis ,180. 

 Clay, 80. 



colloidal, 88. 



effect on soil texture, 87. 

 Clays, 86. 

 Clays, crops for, 92. 



physical composition of, 83. 

 Clover, depth of rooting, 104. 



fertilizer for 344. 



Coefficient of digestibility, 398, 408. 

 Cottonseed meal, 297, 391. 

 Colloidal clay, 88. 

 Colluvial soil, 63. 

 Concentrates, 389. 



digestion experiments on, 401. 



effect on digestion, 405. 



productive value, 425, 480. 

 Cooking, effect on digestion, 407. 

 Copper in plants, n. 



