L Lead, bismuth, tin, 255 ----, desilverization of, 247 ----, silver, zinc, 246 Le Chatelier, theorem of, 57 Lime, burning of, 3 Liquidus curve, 182 M Mandelic acid, 217 Martensite, 224 Mass action, law of, 7 Melting point, influence of pressure on, 66 {347} ---- ----, congruent, 146 ---- ----, incongruent, 139 ---- under the solvent, 122 Menthyl mandelates, 219 Mercuric bromide and iodide, 188 Mercury salts, basic, 301 Metastable equilibria, 69 ---- region, 30 ---- state, 30 Methylethyl ketone and water, 100 Minerals, formation of, 232 Miscibility of liquids, complete, 95, 104, 114 ---- ----, partial, 95, 96, 121 Mixed crystals, 180, 281 ---- ----, changes in, with temperature, 192 ---- ----, examples of, 183, 186, 187, 190, 192, 219, 223 ---- ----, formation of, 181, 182 ---- ----, fractional crystallization of, 188 ---- ----, freezing points of, 182 ---- ----, melting points of, 182, 184 ---- ----, pseudoracemic, 219 Mixtures, isomorphous, 181 ---- of constant boiling point, 105 ---- of constant melting point, 117, 186, 187, 192, 209, 255, 257 Monotropy, 44, 51 Multivariant systems, 16 N Naphthalene and monochloracetic acid, 192 ---- and [beta]-naphthol, mixed crystals of, 183 [beta]-Naphthol, ethylene bromide, picric acid, 256 [alpha]-Naphthylamine and phenol, 213 Nickel iodate, solubility of, 142 _o_-Nitrophenol and _p_-toluidine, 213 O Occlusion of gases, 176 Optical method of determining transition points, 338 Optically active substances, freezing-point curves of, 216 Order of a system, 13 Organic compounds, application of Phase Rule to, 212 P Palladium and hydrogen, 90, 178 Paragenesis, 320 Paraldehyde and acetaldehyde, 204 Partial pressures of two components, 102 Pearlite, 224 Phase, 8 ---- Rule, 8, 16 ---- ----, deduction of, 18 ---- ----, scope of, 1 Phases, formation of new, 69 ----, number of, 9 Phenol, acetone, water, 248 ----, aniline, water, 250 ---- and [alpha]-naphthylamine, 213 ---- and _p_-toluidine, 214 ---- and water, solubility of, 97 Phosphonium bromide, dissociation of, 80 ---- chloride, 65 Phosphorus, 46 ----, distillation of white to red, 50 ----, melting point of red, 47 ----, ---- ---- of white, 48 ----, solubility of white and red, 47 ----, vapour pressure of white and red, 46 Picric acid and benzene, 216 ---- ----, ethylene bromide, and [beta]-naphthol, 256 Polymorphic forms, solubility of, 112 {348} ---- substances, list of, 63 Polymorphism, 33 Potassium nitrate and thallium nitrate, 192 Potential, chemical, 19 Pressure-concentration diagram for two liquids, 102 Pressure-temperature diagram for solutions, 126 Pseudomonotropy, 45 Pseudo-racemic mixed crystals, 21 Pyridine and methyl iodide, 147 Pyrometer, registering, 230