INDEX. 



399 



Potatoes, germination of, Appen- 

 dix to Part II, 391 

 Purgative effect of salts explained, 



354 

 Pus, globules in, 373 

 Putrefaction, 25 



Communicated, 276, 363-378 

 Source of ammonia, 57 



of carbonic acid, 57 



Putrefying sausages, death from, 

 364 

 Their mode of action, 365 

 Substances, their effect on 

 wounds, 366 



alkaline, 375 



acid, ib. 



R. 

 Rain, necessity for, to furnish alka- 

 lies to plants, 119 

 Want of, or excess in, producing 

 diseases in plants, 120 

 Rain-water, contains ammonia, 43 

 Removal of branches, effects of, 97 

 Rhododendron ferrugineum, 97 

 Ripening of fruit, 38 

 Roots, excrements of, 73 

 Rotation of crops, 133-165 

 Rye, 143, 232, 233 



Ashes of, 239, 249 



S. 

 Saline plants, 71 

 Salt, volatilization of, 79 

 Salts, absorption of, 73 



Effects of, on the organism, 352 



on flesh, 354 



on the stomach, ib. 



Organic, in the blood, 353 

 Passage of, through the lungs, 

 352 

 Salt-works, loss in, 79 

 Sand, disintegrates when exposed 

 to the action of carbonic acid, 

 87 

 Saturation, capacity of, 66 

 Sausages, poisonous, 364 

 Saussure, his experiments on air, 

 15 

 On the mineral ingredients of 

 plants, 64, 242-248 

 Science not opposed to practice, 



124 

 Sea-water, analysis of, 79 



Sea-water — continued. 



Contains carbon, 80 



Contains ammonia, 80 

 Silica, properties of, 84, 86 

 Silicates, disintegration of, 155 

 Silver, salts, poisonous effects of, 

 359 



SlNAPIS ALBA, 387 



Size of plants proportioned to or» 



gans of nourishment, 30 

 Snow-water, ammonia in, 43 

 Soda, may replace potash, 70 

 Soils, advantages of loosening, 12 # 



Analyses of, 263 



Exhaustion of, 113 



Ferruginous, improved, 95 



Fertile, of Vesuvius, 131 



Formation of, 82-92 



From lava, 131 



Imbibe ammonia, 51 



Physical properties of, 148 



Important, 152 



Exhaustion of, 1 16 

 Stagnant water, effect of, 95 

 Stalactites in caverns, 93 

 Starch, accumulation of, in plants, 

 98 



Composition of, 37 



Development of plants influ- 

 enced by, 99 



Product of, the life of plants, 21 



In willows, 98 

 Straw, analysis of, 12 



Of rye, 249 

 Struve, experiments of, 113 

 Substitution of bases, 66 

 Succinic acid, 343 

 Sugar, formed from acids, 137 



Composition of, 287 



Carbon in sugar, 12 



Contained in the maple tree, 45 



In Clerodendron fragrans, 103 



Development of plants, influ- 

 ence on, 99 



Fermentation of, 287 



In beet-roots, 45 



Metamorphosis of, 288 



Product of, the life of plants, 21 



Transformation of, 275, seq. 



When produced, 31 

 Sulphate of ammonia, well adapt 

 ed to furnish plants with sul 

 phur, 61 

 Sulphates in water of springs, 61 



