426 



INDEX. 



Neutral salts, 80. 



New elements, discovery of, 403. 



Nickel, 350. 



Nicotine, 531. 



Nihil album, 331. 



Nitrates, 75. 



Nitre, 291. 



Nitric acid, preparation of, 71. 



Nitric acid, properties of, 72. 



Nitric anhydride, 70. 



Nitric oxide, 83. 



Nitric peroxide, 88. 



Nitrogen, abundance of, G6. 



Nitrogen, chloride of, 227. 



Nitrogen in respiration, 68. 



Nitrogen in the air, 132. 



Nitrogen, oxides of, 69. 



Nitrogen, preparation of, 66. 



Nitrogen, properties of, 67. 



Nitrogen, sources of, in plants, 477. 



Nitroglycerin, 515. 



Nitrous anhydride, 86. 



Nitrous anhydride in nitric acid, 87. 



Nitrous oxide, 81. 



Nitrous oxide, properties of, 82. 



Nomenclature, 17, 79. 



Nordhausen sulphuric acid, 241. 



O. 



Oils and fats, 513. 



Oils, composition of, 514. 



Oils, varnish, 520. 



Oils, volatile, 524. 



Olefins, 419. 



Ores, 280. 



Organic bodies, molecules in, 412. 



Organic chemistry, definition of, 411. 



Organic chemistry, remarks on, 406. 



Organic substances, classification of, 

 418. 



Organic substances, constituents of, 

 407. 



Organic substances similarly com- 

 posed, 41 4. 



Organized bodies, 406. 



Organo-metallic compounds, 426. 



Osmium, 387. 



Oxalic acid, decomposition of, 113. 



Oxidation a slow combustion, 195. 



Oxidation, degrees of, 62. 



Oxides, 61. 



Oxygen, abundance of, 46. 



Oxygen a supporter of combustion, 

 56. 



Oxygen, discovery of, 48. 



Oxygen essential to life, 60. 



Oxygen, experiments with, 57, 58, 

 59. 



Oxygen, preparation of, by various 

 methods, 54. 



Oxygen, preparation of, from man- 

 ganese dioxide, 51. 



Oxygen, preparation of, from mercu- 

 ric oxide, 47, 49. 



Oxygen, preparation of, from potas- 

 sium chlorate, 52. 



Oxygen, properties of, 55. 



Oxygen, source of, in plants, 475. 



Ozone, 63. 



Ozone, nature of, 65. 



Ozone, test for, 64. 



P. 



Paraffin series of hydrocarbons, 420. 

 Paris green, 361. 

 Pectin, 453. 



Perfume ethers (page 388), 548. 

 Perissads, 44. 

 Peroxide, 62. 



Petrified wood, see Silicified wood. 

 Petroleum, composition of, 443. 

 Petroleum, discovery of, 442. 

 Petroleum, hydrocarbons in, 443. 

 Petroleum, refining of, 444. 

 Phlogiston, 48". 

 Phosphoretted hydrogen, 255. 

 Phosphorus, amorphous, 251. 

 Phosphorus burned in oxygen, 58. 

 Phosphorus, experiments with, 250. 

 Phosphorus in animals, 577. 



