INDEX 



Absorption, 152, 240. 

 Acid consumed, 187. 

 Acid, effect on digestion, 406. 

 Acid phosphate, 306. 

 Acid soils, 160, 162, 250. 

 Acidity, detection, 253. 

 Acids, fatty in feeds, 353. 

 Acids in feeds, 376. 

 Active plant food, 180. 



significance, 187. 

 Ahesion of soils, 115. 

 Aerobic bacteria 286. 

 Agricultural chemistry, 2. 

 Agriculture, object, i. 

 Air, carbon dioxide in, 37. 



composition, 36. 



relation to plant, 6. 

 Amendments, 293. 

 Amides, 358. 



value in feeding, 475. 

 Ammonia absorbed by leaves, 47. 



assimilation, 219. 



of air, 46. 



production in soil, 215. 

 Ammonification, 204, 208. 

 Ammonifying power, 210. 

 Amylopsin, 394. 

 Albite, 150. 

 Albumins, 357. 

 Alcohols, wax, 157, 349. 

 Alfalfa, fertilizer for, 344. 



meal, 391. 

 Alkali, black, 258, 265. 



effect on plants, 263. 



origin, 259. 



prevention, 267. 

 Alkali, white, 258. 

 Alkali soils, 258. 



classes, 265. 



utilization, 265. 



Alkaloids, 360. 

 Alluvial soil, 66, 96. 

 Animals, composition, 411. 



composition of gain, 442. 



feeding young, 458. 



growing, 456. 

 Animal production, 3. 

 Apatite, 15, 155, 184, 305. 

 Appalachian mountain soils, 76. 

 Appetizers, 434. 

 Arabinose, 366. 

 Argon, 46. 



Arid climate, 50, 139. 

 Arid soils 77, 178... 

 Ash, 346. 



constituents, n. 



effect of soil and season on, 22. 



essential, 10. 



excess taken up by plants, 24, 191. 



importance, 9. 



indifferent, 19. 



minimum needed, 20. 



needed by animals, 458. 



not created, 10. 



of leaves, 22. 



of plants (table), 23. 



of roots, 21. 



of seeds, 21. 



of straw, 22. 



of tubers, 21. 



stage of growth affecting, 26. 



strong and weak plants, 25. 



variations, 22. 



value in feeding, 458, 475. 



washed from plants, 20. 

 Asparagin, 359. 



value for maintenance, 438. 

 Atlantic and Gulf Coastal Plain 



soils, 75. 

 Atmosphere, 36. 



