INDEX OF SUBJECTS. 



Principle of Hess, 323 



of maximum work, 324 

 Probability theory (Maxwell's), 304 

 Proin, 126 

 Propionic acid, 257, 258 



acid, synthesis, 235 



ether, 258 

 Propyl aldehyde, 253 



pyridines, 284, 286 

 Propylene, 269 



glycol, 257 



Prout's hypothesis, 102, 311 

 Purpurine, 281 

 Pyrazol group, 355 

 Pyrene, 283 

 Pyridine, 283 etc. 



carbonic acid from oxidation of 

 nicotine, 285 



dicarbonic acid, 286 



series, isomerism in, 284 



series, position of substituted 

 atoms or groups, 284 



synthesis, 284 



tricar bonic acid, 286 

 Pyrophosphoric acid, 153, 158, 243 

 Pyrrol, 286, 287 



QUINIZARINE, 281 

 Quinoline, 283 etc., 295 

 from decomposition of al- 

 kaloids, 285 

 synthesis, 284, 285, 296 

 Quinone, 278, 279 



formulae for, 278 



Quinones, Grabe's examination of, 

 278 etc. 



RACEMIC acid, 118, 267 etc. 

 acid, Pasteur's modes of de- 

 composing, 267 etc. 

 acid, synthesis, 289 

 and partially racemic substances, 



353 



compounds, splitting of, 350 

 Racemism, 353 

 Radical, 31, 33, 124, 126 etc., 167, 



169, 217, 225 

 compound, 109 

 Liebig's definition, 128 

 theory, no, 121, 130 etc., 174, 

 176 etc., 230 



Radicals, 186, 217 

 binary, 170 



conjugated, 220 etc., 228, 230 

 containing metals, 221, 231, 



235, 242 

 different, recognised by Kolbe, 



229 



isolation, 226 

 polyatomic, 240, 247 

 with basicity greater than one, 



214, 221 



Refraction equivalents, 330 

 Refractive index, 329 etc. 

 Relations between electrical and 



chemical forces, 325 

 between optical and chemical 



properties, 326 

 by weight in chemical changes, 



II, 21 



Replacement, 139 



Residues, theory of, 180 etc., 293 



Respiration, 29 etc. 



Retene (Methyl - propyl - phenan - 

 threne), 282 



Rosaniline, 279, 295 



Rosolic acid, 280, 295 



Rotation of plane of polarisation, 



332 



of plane of polarisation, electro- 

 magnetic, 332 



Rubidium, discovery, 318 



Rubies, artificial, 319 



SALICYLIC acid, 229 

 Salts, 242 



amphid, 84, 120 



haloid, 84, 120 



neutral, 161 



views regarding, 120 

 Salylic acid, 271, 273 

 Saturating capacity (Frankland), 



231, 242 



Scandium, 313, 318 

 Secondary batteries, 340 

 Semi-permeable membranes, 336 

 Sesquioxides, 242 

 Silicic acid, derivatives, 310 

 Silicon ethyl, 228 



fluoride, discovery, n 



replacement of carbon by, 167 

 Sodium, discovery, 67, 74 etc. 



ethyl, 228 



