SUBJECT INDEX 



581 



Vapour-density, variation with 



temperature, 522 

 Verdigris, 16 



Vicarious replacement, 370 

 Vinegar, 6, 8 

 distilled, 12 



" Vinegar upon nitre," 4 

 Vinous fermentation, 388 

 Vital air, 40 

 Vitriol, blue, 17, 1 8 

 green, 9, 17, 18 

 Nordhausen oil of, 13 

 oil of, 9, 13 



displaced by nitric acid, 498 

 Vitriolated tartar, 18 



decomposed by nitric acid, 



498 

 Vitriolic acid air (sulphurous 



anhydride), 164 

 converted into oil of vitriol, 

 167 



preparation of, 165 

 properties of, 166 

 Vitriols, 17 



preparation of, 18 

 Volatilespiritofsal-ammoniac,57 

 Voltaic pile, 271 

 Volta's eudiometer, 122 



W 



I Water absorbed and liberated 

 in the formation of salts, 269 

 a product of combustion, 113 

 an element, 112 

 an oxide, 117 

 association of, 527 



Water by reduction of metallic 

 calces, 123 



composition of, Berzelius and 

 Dulong, 124 ; Cavendish, 

 115; Dumas, 125; Humboldt 

 andGay-Lussac, 122; Monge, 

 120; Morley, 128; Scott, 127 



decomposed by charcoal, 142 

 by electric current, 272 

 by iron, 118 

 by potassium, 277 

 by sodium, 279 



dissociation of, 515 



-gas 143 



hardness of, 105 



-molecules, 527 



of crystallisation, 25 



structure of, 439 



type, 424 

 Waters, aerated, 102 



chalybeate, 108 



mineral, 102 

 Waxes, 6 



Willow- tree, van Helmont's, 112 

 Wine, 6, 8 



X-rays, wave-lengths of, 487, 

 488, 489 



Zinc oxide reduced by charcoal, 



T 37 



Zinc, pure, does not dissolve in 

 acids, 530 



