394 



INDEX. 



Ammonia, carbonate of, in air, 43 



How fixed, 1S1 



Cause of nitrification, 309 



Changes colors, 41 



Condensed by charcoal, 50 



Conversion of, into nitric acid, 

 309 



Early existence of, 206 



Evolved from manure, 51 



Fixed by gypsum, 182 



Contained in beet-root, 46 



maple juice, 46 



privies, 182 



stables, 182 



Furnishes nitrogen, 57 



Deductions of Boussingault con- 

 cerning, 199 



Boussingault's deductions are 

 erroneous, 200 



Is not an essential constituent 

 of manure, 202 



Is always of use in manure, 203 



Loss from evaporation, 182 



Inorganic origin of, 7S 



Product of decay, 42 



Properties of, 41 



Quantity absorbed by charcoal, 

 56 



by decayed wood, 56 



In rain-water, 44 



In humus, 6 



In snow-water, 44 



Separated from soils by rain, 56 



Solubility of, 43 



Transformations of, 41 



Product of disease, 384 

 Analysis of ashes of great import- 

 ance, 203 

 Animal, food, preservation of, 304 



Life, dependent on plants, 57 



processes of, 167 



Matter, products of decay of, 57 



essential to nitrification, 



214 

 Animals, excrements of, how form- 

 ed, 50, 51 



Faeces of, contain little nitrogen, 

 50 



Liquid excrements of, rich in 

 nitrogen, 48 



Obtain their fundamental sub- 

 stances from plants, 60 

 Annual plants, how nourished, 99 

 Anthoxanthum odoratum, acid 

 U»,40 



Anthracite, 353 

 Antidotes to poisons, 362 

 Apatite, 117, 118 

 Arable land, formation of, 82 

 Argillaceous earth, 111 

 Aromatics, their influence on fer- 

 mentation, 315 

 Arsenious acid, action of, 361 

 Ashes, analysis of various plants. 

 See pages 68, 143, 150, 203, 

 and Appendix to Part I., 230- 

 254 



As a manure, 175 



Of bones, 1S5 



Of peat, 186 



Of coals, 17S 



Of wood, 176 

 Assimilation of carbon, 3-27 



Of carbonic acid and ammonia' 

 98 



Of hydrogen, 35-39 



Of nitrogen, 40-58 

 Atmosphere, ammonia in, 43 



Carbonic acid in, 15 



Composition is invariable, 13 



Motion of, 19 

 Atoms, motions of, 271 



Permanence in position of, 271 

 Azotized matter in juices of plants 

 102 



Substances, combustion of, 307 



B. 

 Bark of trees viewed as exeremen- 

 titious, 164 



Of fir, analysis of its ashes, 164 

 Barley, analysis of its ashes, 150 



Experiment oa, Q2S 

 Basalt, analysis of, 88 

 Bases, alkaline in plants, on what 

 their existence depends, 70 



Organic, 4, 71 



Oxygen contains! In, 67 



In plants, 65-81 



Substitution of, 68, 70 

 Beans, analysis of ashes of, 143 



Contain casein, 135 



Nutritive power of, 134 

 Beech, analysis of its ashes, 248 

 Beer, 319 



Bavarian, 319 

 Beet, analysis of, 12 



Ammonia contained in, 46 



From sandy soils, 104 

 Benignant disease, 380 



