37 



INDEX OF SUBJECTS. 



Notation of Berzelius, 90 

 Nucleus theory of Laurent, 143 etc. , 

 167, 174, 1 80, 202 



OIL of the Dutch chemists, 136, 

 141, 149 



Olefiant gas, 122 etc. 

 Organic acids, Liebig's researches, 



154 



analysis, 28 etc., 113 etc. 



analysis of nitrogenous sub- 

 stances, 114 



chemistry, new nomenclature, 



355 



chemistry, separate treatment, 

 108, in etc. 



compounds, classification by 

 Gerhardt, 215 etc. 



compounds, constitution of, 

 117, 121, 288 



compounds, derivatives of in- 

 organic compounds, 235 

 Organo-metallic compounds, 227, 



232 

 Ortho-condensation, 296 



(a /?) pyridine dicarbonic acid, 



285 



Orthotoluidine, 279 

 Orthrin, 126 

 Osmotic pressure, 336 

 Othyl, 209 

 Oxalic acid, u, 122, 226, 243, 255, 



259 



Oxamide, 185, 214 



Oxanilide, 185 



Oxidation of substituted pyridines, 

 284 



Oximes, 348 



Oxindol, synthesis, 296 



Oxybenzoic acid, 257 



Oxycumarines, 295 



Oxygen, assumed presence in hydro- 

 chloric acid, 76, 78 etc. 

 discovery, n, 16, 24 



Oxy-isobutyric acid, 264 



Oxypropionic acid, 257 



Ozone, density, 345 

 discovery, 200 



PARA - OXYBENZOIC acid, 

 277 



Perfumes, artificial, 355 



Periodic law, 103, 311 etc. 



Perkin's reaction, 292 



Phase rule, 334 etc., 349 



Phases, theory of, 334 etc. 



Phenanthrene, 281 



Phenol aldehydes, synthesis, 292 



dyes, 280 



Phenols, synthesis, 291 

 Phenyl, 229 



hydrazine, 348 



sulphonic acid, 239 

 Phenylene diamines, 277 

 Phlogistians, chemical knowledge 



of, 10 



Phlogisticated air, 18 

 Phlogiston theory, 5 etc., 12 etc. 

 Phosgene, 170 

 Phosphoric acid, 236, 244 



acids, Graham's investigations, 

 152 etc. 



acids, supposed isomerism, 118, 

 152 



anhydride, 25 

 Phosphorus, acids of, 243 



pentabromide, vapour density, 

 301 



pentachloride, vapour density, 

 301 



pentachloride, dissociation, 305, 



307 



vapour density, 106, 299 

 Photo-chemical induction, 328 

 Phthale'ines, 280, 295 

 Phthalic acid, 238, 276 



anhydride, 282 

 Picene, 283 



Picoline, synthesis, 289, 294 

 Picric acid, 221 

 Piperidine, 285 



synthesis, 290 

 Piperonal, 355 



Polybasic acids, 185, 190, 194 etc., 

 202, 242, 292 



acids, theory of, 151, 154 



etc. 



Polyethylene alcohols, 247 

 Polarity (Brodie), 198 etc. 

 Polymerism, 118 

 Potassamide, 76, 77 

 Potassium, discovery, 67, 74 etc. 



ethyl, 228 



iodide, formula, 343 



