SUBJECT INDEX 



577 



Organic analyses, alcohol and 



ether, 388 

 of Berzelius, 392, Liebig, 



395 ; Gay-Lussac 390 

 bodies containing metals, 



435 



chemistry, rise and develop- 

 ment of, 384 



compounds, carbon and hy- 

 drogen in, 385 

 formulae of, 391 

 Organo-metallic compounds, 435 

 Orthrin, 401 

 Oxalic acid, 13 



composition of, 391 

 displaces hydrochloric acid, 



509 



formula of, 393 

 Oxidation, 124 

 Oxide of iodine, 238 

 Oxides, 43 



of nitrogen, composition of, 



204 



reduced by potassium, 277 

 Oxyacids, 247 

 Oxygen, 42 



as standard of molecular and 



atomic weights, 

 atomic weight of, 348 

 density of, 128 

 discovery of, 38, 43 

 displaced by chlorine, 226 

 from nitre, 44 

 from nitric acid, 44 

 from red lead, 39 

 from red oxide of mercury, 



39, 44 

 Oxymuriatic acid (chlorine), 



215 

 Oxy-salts, 264 



Palladium tube, 130 

 Pearl-ashes, 3, 68 

 Pearls, 6 



Periodic acid, 254 

 Periodic classification, 462 



Law, 459 

 Periodicity, 457, 458 



of atomic heats, 471 



HIST. CHEM. 



Periodicity of atomic volumes, 



469 



of valency, 468 

 Peroxide of manganese, 211 

 of potassium, 283 

 of sodium, 283 

 Peroxides, 211 

 Perissads, 442 

 Philosopher's stone, 2 

 Phlogisticated acid of nitre, 198 ; 



air, 31 



Phlogiston, 31 



Phosphates and arsenates, iso- 

 morphism of, 368 

 Phosphonium iodide, structure 



of, 433 



salts, vapour-densities of, 519 

 Phosphoric acid, and phosphates, 



179 



displaces sulphuric acid, 509 

 Phosphoretted hydrogen, 180 

 from phosphorous acid, 181 

 not an acid, 181 

 Phosphoric anhydride, 179 

 Phosphorous acid and phos- 

 phites, 1 80 

 Phosphorus, atomic weight of, 



35i 



burning of, 178 

 distilled in dry oxygen, 531 

 preparation of, 177 

 properties of, 178 

 smouldering of, 179 

 supposed to contain hydrogen, 



265 

 pentachloride a molecular 



compound, 442 

 dissociation of, 523 

 vapour- density of, 523 

 Picramyl radical, 409 

 Plaster of Paris, 16 

 Plumbago (see Graphite), 101 

 Polyatomic radicals, 433 

 Polymerisation, 351 

 Polymorphism, 372 

 Polysulphides, 177 

 Potash, 3 



action of heat on, 55 

 as an element, 257 

 caustic, isolated, 55 



P P 



