3&6 



IN'MX. 



Cow-pox, action of virus of, 3S2 

 Cow, urine of, analysis, 169, 256, 257 

 Crops, rotation of, 136, 165 

 Cultivation, its benefits, 19 



Different methods of, 10S 



Object of, 109 

 Culture, art of, 93-122 

 Cyanic acid, transformation of, 2S5 

 Cyanogen, combustion of, 310 



Transformation of, 286 



D. 

 Darwin on the formation of soils, 83 



Descriptions of the gold ores in 

 Chili, 126 

 Death, the source of life, 58 

 Decay, 295 



A source of ammonia, 42 



Of wood, 338 



And putrefaction, 273 

 Decomposition, 2G7 

 Diamond, its origin, 343 

 Diastase, 118 



Contains nitrogen, 119 

 Disease, how excited, 355-390 

 Disintegration of rocks, 89 



Of ores, 126 

 Dung of the nightingale, 262 



E. 

 Ebony wood, oxygen and hydrogen 



in, 24 

 Elements of plants, 3 

 Eremacai/sis, 295-310 



Analogous'to putrefaction, 301 



Arrested, 296 



Definition of, 295 



Necessary to nitrification, 307 



Of bodies containing nitrogen, 



307 

 Of bodies destitute of nitrogen, 

 303 

 Ether, cenanthic, 316 

 Excrementitious matter, pro- 

 duction of, illustrated, 168 

 Excrement, animal, its chemical 

 nature, 169 

 Of the cow, horse, &c., 169, 

 170, 255-266 

 Excrements, manure in which they 

 are found, 169 

 Of animals, contain the same 

 amount of nitrogen, as that 

 present in the food, 169 



Excrements — continued. 



Of plants, 32 



Conversion of r into humus, 32 



Of man, amount of, 172, 173 

 Excretion, organs of, 167 



Of plants, theory of, 32 



F. 

 Fallow, 123-133 

 Felspar, decomposition of, 90 

 Analysis of, 86 

 Various kinds of, 86 

 Decomposed analysis of, 90 

 Ferment, 289 

 Fermentation, 287, 311-337 



Ascribed to fungi, and infusoria, 



326-337 

 Of Bavarian beer, 319, 325 

 Of beer, 311 

 Gay-Lussac's experiments in, 



329 

 Of sugar, 287 

 Of vegetable juices, 2S8 

 Vinous, 311 

 Of wort, 312 

 Fertility of fields, how preserved, 



174 

 Fibrin, 58, 135 



Fires, plants on localities of, 116 

 Fir bark, analysis of its ashes, 164 



Wood, analysis of its ashes, 164 

 Fishes in salt pans, 77 

 Flesh, effect of salt on, 35S 



Preserved under certain circum- 

 stances, 330, 33 J 

 Fluorine in ancient bones, 120 

 Food, effect on products of plants, 

 105 

 Of young plants, 97 

 Transformation and assimilation 



of, 32 

 Knowledge of its composition 



essential, 133 

 Undergoes combustion in the 

 body, 168 

 Formation or wood, 103 

 Franconia, caverns in, 94 

 Fruit, increased, 98 

 Ripening of, 38 



-, changes attending, 99 



Fucus gig ante us, 226 

 Fungi, supposed to cause fermenta- 

 tion, 326-337 



