INDEX. 



ACI 



ALK 



.Abnormal, meaning of the term, 



140. 

 Absorption^ by roots, 107. 



Of salts, 116. 

 Acetone^ 306. 

 Acid^ acetic, emitted by plants, 150. 



— — compound atom of, 301. 



transformation of, 306. 



formation of, 329-334. 



Apocrenic, 31. 



Boracic, 122. 



Carbonic, 24 - 70. 



-^— — — contained in the atmo- 

 sphere, 28. 



. decomposed by plants, 



43. 



from respiration, 44. 

 from springs, 29. 

 why necessary to 



plants, 105. 

 Crenic, 31. 



Cyanic, transformation of, 310. 

 Cyanuric, 70. 

 Formic, 71, 86, 290. 

 Hippuric, 97. 

 Humic, 31. 



properties of, 34. 



Hydrocyanic, 70, 290. 

 Hydromellonic, 70. 

 Hypochlorous, 293. 

 Kinic, 114. 

 Kinovic, 301. 

 Lactic, 190. 



production of, 321. 



Meconic, 115. 



Melanic, 326. 



Mellitic, 363. 



Nitric, source of, 88. 



Oxalic, 70. 



Phosphoric, in ashes of plants, 



155. 

 Rocellic, in plants, 108. 



Acict, succinic, 363. 



Sulphuric, action of, on soils, 

 208, 248. 



Tartaric, in grapes, 108. 

 Acids ^ action of upon sugar, 303. 



Arrest decay, 361. 



Capacity for saturation, 108. 



Organic, in plants, 27, 107. 



when formed, 51. 



Acre^ Hessian, 36. 

 AdipocirCj 88. 

 Affinity, action of, 71. 



Chemical, examples of, 292. 



Weak, example of, 293. 

 Agave Americana^ absorbs oxygen, 



51. 

 Agriculture, in China, 193. 



Object of, 100, 145, 172. 



how attained, 146. 



Its importance, 143. 



A principle in, 187. 

 Air, access of, favored, 65, 



Ammonia in, 29, 91. 



Carbonic acid in, 41. 



Effect of upon juices, 330. 



on soils, 167. 



Expired in phthisis, 73. 



Improved by plants, 47. 



Necessary to plants, 130. 

 Albumen, 96, contains nitrogen, 27. 

 Alcohol, effect of heat on, 306. 



Exhaled, 72. 



Products of its oxidation, 327. 



From sugar, 313. 

 Aldehyde, 327. 

 Alkalies, 69, from granitic soils, 1 17. 



Presence of, indicated, 215. 



Promote decay of wood, 361. 



Quantity in aluminous minerals, 

 148. 

 Alkaline Bases, in plants, on what 

 their existence depends, 1 12. 



