INDEX. 



39.1 



Benzoic acid, formed, 48 

 Birch tree, ammonia in, 46 

 Blood, analysis of its ashes, 142 



Action of chemical agents upon, 

 374 



Its feeble resistance to exterior 

 influences, 374 



Organic salts in, 357 



Its character, 367 

 Blossoms, when produced, 32 



Increased, 98 

 Bones, dust of, 178, 185 



Durability of, 185 



Gelatine in, 186 

 Boracic acid, 78 

 Bouquet of wines, 316 

 Brandy from corn, 315 



Oil of, 316 

 Brazil, wheat in, 114 

 Brown Coal, 348 

 Buckwheat, 223 



Cactus, 34 



Calcium, fluoride of, 119 



Chloride of, 181 

 Caoutchouc, in plants, 34 

 Carbon, assimilation of, 3, 28 



Of decaying substances, seldom 

 affected by oxygen, 299 



Derived from air, 15 



In sea-water, 80 



Produce of, in land, 12 



in beet, 12 



in straw, 12 



Restored to so'l, 32 



Received by ie^es, 16 

 Carbonate of ammonia, contained 

 in rain-water, 44 



Decomposed by gypsum, 180 



Of lime in caverns and vaults, 

 94 

 Carbonic acid in the atmosphere, 

 15 



Changes in the leaves, 106 



Decomposed by plants, 19 



Decomposes soils, 83 



Emission of, at night, 26 



Evaporation of, 27 



Evolution from decaying b< dies, 

 299-302 



From humus, 29 



respiration, 167 



woody fibre, 338 



Increase of, prevented, 16 



Carbonic acid— continued. 



Influence of light on its decom- 

 position, 106 

 Carburetted hydrogen, with 



coal, 368 

 Caverns, stalactites in, 94 

 Charcoal, condenses ammonia, 56 



Promotes growth of plants, 185 

 Chemical effects of light, 106 



Processes in the nutrition of 

 vegetables, 2 



Transformations, 265, 275 

 Chemistry, organic, what it is, 1 

 Chloride of calcium, 181 



Of potassium, 72 



Of sodium, its volatility, 79 

 Clay slate, 88, 89, 118 

 Clays, formation of, 90 



From porphyry, 90 



From felspar, 91 



Potash in, 111 

 Clay, burned, how it acts as ma- 

 nure, 55, 130 

 Coal, formation of, 346-354 



Inflammable gases from, 353 



Of humus, 5 



Wood or brown, 348-352 

 Colors of flowers, 41 

 Combustion at low temperatures, 

 300 



Of decayed wood, 342 



Induction of, 270, 306 



Respiration, viewed as, 169 



Spontaneous, 297 

 Concretions from horses, 118 

 Constituents of the blood exist in 

 plants, 60 



The formation of, the main ob- 

 ject of agriculture, 53 

 Contagion, reproduction of, on 

 what dependent, 377, 378 



Susceptibilitv to, how occasion- 

 ed, 378 

 Contagions, how produced, 376-378 



Propagation of, 377-384 

 Contagious matters, action of, 376, 

 379, 383 



Their effects explained, 353, 377 



Life in, disproved, 353, 377 



Reproduction of 353, 377-378 

 Copper, oxide of, in clay slate, 118 

 Corn, how cultivated in Italy, 114 

 Corn brandy, 314 

 Corrosive sublimate, action of 

 361 



