INDEX. 



135 



contain phosphoric acid, potash, &c., 82, 83 

 Fertile, of Vesuvius, 51 From lava, 51 Im- 

 bibe ammonia, 54 Improved by crops, 54 

 Impoverished by crops, 54 Various kinds of, 

 70, 53. 



Stagnant water, effect of, 44. 



Stalactites in caverns, 43. 



Starch, accumulation of, in plants, 45 Compo- 

 sition of, 29 Developement of plants influ- 

 enced by, 45 Effect of, on malt, 26 Product 

 of, the life of plants, 18 In willows, 45. 



Staunton, Sir G., on Chinese manure, 65. 



Straw, analysis of, 1 4. 



Struve, experiments of, 51. 



Substitution of bases, 37. 



Sussinic acid, 112. 



Sugar, action of alkalies upon, 92 acids upon, 

 92 Composition of, 95 Carbon in sugar, 14 

 Contained in the maple-tree, 32 In clero- 

 dendron fragrans, &c., 47 Developement of 

 plants, influence on, 45 Fermentation of, 95 

 In beet-roots, 32 Metamorphosis of, 95 

 Organic compounds, all form sugar, 91 Pro- 

 duct of the life of plants, 18 Transformation 

 of, 93 When produced, 24. 



Sulphur, crystallised, diamorphous, 90. 



Sulphuric acid, action of, on soils, 70, 84. 



Sulphurous acid arrests decay, 111. 



Swine, urine of, 68. 



Synaptas, 128. 



T. 



Tabasheer, 58. 



Tables of English and Hessian weights, 130. 



Tannic acid, 29. 



Tartaric acid, 29 Converted into sugar, 29 In 

 wine, 105. 



Teak tree, salts found in, 53. 



Teltowa parsnep, 24, 47. 



Thenard, his experiments on yeast, 95. 



Tin, action on nitric acid, 58. 



Tobacco, juice contains ammonia. 53 Leaves of, 

 106 Nitric acid in, 64 In Virginia, 51 Va- 

 lue of, proportional to the quantity of potash in 

 the soil, 72. 



Transformation, by heat, 92 Chemical, 25, 87 

 Chemical transformations differ from decom- 

 positions, 25 Of acetic acid, 92 Of arrago- 

 nite, 90 Of carbonic acid, 48 Of meoonic 

 acid, 92 Not affected by the vital principle, 

 26 Explained, 26 Of bodies containing ni- 

 trogen, 92 Of bodies destitute of nitrogen, 

 93 Results of, 26 Of wood, 93 Of cyanic 

 acid, 94 Of cyanogen, 94 Of gluten, 104. 



Transplantation, effect of, 45. 



Trees, diseases of, 47 Require alkalies, 52. 



U. 



Ulmin, 12. 



Urea, converted into carbonate of ammonia, 33 

 In wine, 64. 



Uric acid, yields ammonia, 64 Transformations 

 of, 64. 



Urinary calculi, treatment of, 26 Organs, elimi- 

 nate nitrogen, 26. 



Urine, contains nitrogen, 33 Its use as manure 

 68, 71 Of men, &c., 64 Of horses, 68 

 Human, analysis of, 64 Of cows, 68 Its 

 use in China and Flanders, 33, 65 Of swine, 

 68. 



V. 



Vaccination, its effect, 126. 



Vegetable albumen, 33 Mould, 112 Juices, fer- 

 mentation of, 95. 



Vesuvius, fertile soil of, 51. 



Vines, new mode of manuring, 86 Juice of, 

 yields ammonia, 33. 



Vinous fermentation, 103. 



Virginia, early products of its soils, 51. 



Virus, of small pox, 126 Vaccine, 126. 



Vitality, what, 21. 



Vital principle, 26 Value of the term, 26 How 

 balanced in the blood, 122. 



Vital processes of plants, 56. 



W. 



Water, carbonic acid of, absorbed, 16 Composi- 

 tion of, 28 Dissolves mould, 112 Plants, 

 their action upon, 20 Rain, contains ammo- 

 nia, 31 required by plants, 11 required by 

 gypsum, 35 Salt, analysis of, 42. 



Wavellite, 53. 



Wheat, analysis of, 53 Ashes of, used as a ma- 

 nure, 72 Exhausts, 52 Gluten of, 33 Why 

 it does not thrive on certain soils, 52 In Vir- 

 ginia, 51. 



Willows, growth of, 45. 



Wine, effect of gluten upon, 106 Fermentation 

 of, 106 Properties of, 106 Substances in, 

 104 Taste and smell, 105 Varieties of, 105 



Woad, decomposition of, 97. 



Wood, charcoal may replace humus, 27 a ma- 

 nure, 87 Decayed combustion of, 112 Ab- 

 sorbs ammonia, 35 Analysis of, 19 Conver- 

 sion of, into humus, 110 Decay of, 110 

 Requires air, 110 Decomposition of, 87, 97 

 Effect of moisture and air on, 110 Elements 

 of, 110 Formation of, 47 Source of its car- 

 bon, 14 Transformation of, 93. 



Wood coal, how produced, 1 13 Analysis of, 1 14, 

 115. 



Woody fibre, changes in, 110 Composition of, 

 110 Decomposition of, 110 Difference be- 

 tween it and wood, 110 Formation of, 18 

 Moist, evolves carbonic acid, 110 Mould from, 

 113. 



Wormwood, effect of its culture, 41. 



Wort, fermentation of, 107. 



Wounds, effect of putrefying substances on, 

 120. 



Y. 



Yeast, 96 Destroyed, 104 Experiments on, 98 

 Formed, 104 Its mode of action, 97 Ita 

 production, 119 Two kinds of, 107. 



Z. 



Zinc, decomposition of water with, 29 



