VIN 



429 



woo 



TohaccOj value of, proportional to 

 quantity of potash in the soil, 



Nitric acid in, 97. 



In Virginia, 151. 

 Transformation, by heat, 306. 



Chemical, 71, i>i)l. 



Chemical transformations differ 

 from decompositions, 71. 



Of acetic acid, 306. 



Of arragonite, 298. 



Of carbonic acid, 142. 



Of meconic acid, 306. 



Not affected by the vital princi- 

 ple, 74. 



Explained, 74. 



Of bodies containing nitrogen, 

 305. 



Of bodies destitute of nitrogen, 

 305. 



Results of, 75. 



Of sugar, 303. 



Of wood, 306. 



Of cyanic acid, 311. 



Of cyanogen, 311. 



Of gluten, 339. 

 Transplantation^ effect of, 132. 

 Trees, diseases of, 137. 



Require alkalies, 154. 



ULMIN, 30. 



Urea^ 70, 87 ; converted into car- 

 bonate of ammonia, 97. 



In urine, 189. 

 Uric Acid, yields ammonia, 192. 



Transformations of, 193. 

 Urinary calculi, treatment of, 74. 



Organs, eliminate nitrogen, 73. 

 Urine, contains nitrogen, 97. 



Its use as a manure, 95, 201, 211. 



Of men, &c., 190. 



Of horses, 202. 



Human, analysis of, 190. 



Of cows, 202. 



Its use in China and Flanders, 

 95, 194. 



Of swine, 202. 



Vaccination, its effect, 405. 



Vegetable Albumen, 9Q. 



Life, one end of, 23. 



Mould, 363. 



Juices, fermentation of, 314. 

 Vesuvius, fertile soil of, 149. 

 Vines, new mode of manuring, 253. 



Juice of, yields ammonia, 94. 

 Vinous Fer mentation ^ 338. 



Virginia, early products of its soils, 



151. 

 Virus, of small pox, 405. 



Vaccine, 405. 

 Vitality, what, 59. 

 Vital Principle, 73. 



Value of the term, 75. 



How balanced in the blood, 374. 

 Vital Processes of plants, 166. 

 Voelckely his analysis of guano, 96. 



Water, carbonic acid of, ab- 

 sorbed, 44. 

 Composition of, 81. 

 Dissolves mould, 364. 

 Freezing of, 296. 

 Plants, their action upon, 56. 

 Rain, contains ammonia, 91. 



required by plants, 28. 



required by gypsum, 102. 



Hard, made soft, 92. 



Salt, analysis of, 124. 

 Wavellite, 156, 

 West Indies, soil of, 244. 

 Wheat, analysis of, 154. 



Ashes of, used as a manure, 213. 



Exhausts, 152. 



Nitrated, 272. 



Gluten of, 94. 



Manure for, 213. 



Why it does not thrive on cer- 

 tain soils, 153. 



In Virginia, 151. 

 Wilbrand, Dr., on maple sugar, 93. 

 Willows, growth of, 133. 

 Wine, effect of gluten upon, 347. 



Fermentation of. 347. 



Properties of, 347. 



Substances in, 341. 



Taste and smell, 342. 



Varieties of, 1342. 

 Wood, decomposition of, 320. 

 Wohler, his analysis of limestone, 



153. 

 Wood charcoal, may replace hu- 

 mus, 78. 



a manure, 249. 



Decayed combustion of, 362. 



Absorbs ammonia, 104. 



Analysis of, 52. 



Bread from, 133. 



Composition of, 264. 



Conversion of, into humus, 335. 



Decay of, 357. 



Requires air, 358. 



Decomposition of, 320. 



Elements of, 358, 360. 



