The Romance of Modern Chemistry

INDEX Polluted water, 103 Potash, 90 Potassium, 297 Potassium chlorate, 122, 173 Potatoes, 228 Priestley, 335, 336 Prince Rupert’s drops, 166 Proteids, 227 Prussian blue, 281 Putty, 242 Q Quicklime, 92 R Radium, 32, 55, 258 Ramsay, Sir William, 213, 341 Rapidity of explosion, 178 Rate of crystallisation, 317 Rayleigh, Lord, 341 Red phosphorus, 52 Refining of copper, 299 „ ,, sugar, 230 Refrigeration, 186 Regenerative burner, 160 Respirating apparatus, 89 Respiration, 116 Rontgen rays, 323 Rubidium, 213 Rubies, 257 Rusting, 116 S Saccharine, 288, 289 Safety lamp, 163 Safety matches, 124 Salt and snow, 181 Salt-cake, 274 Saltpetre, 171, 267 Salt solution, 310, 311 Sapphires, 257, 258 Sea water, 99,101 Semi-permeable membranes, 304 Shale, 149, 245 Silica vaporised, 199 Slag, 271, 272, 273 Slag as manure, 225 Slag wool, 272 Slaking of lime, 92, 294 Smokeless powders, 172 Smoke nuisance, 110 Snow and salt, 181 Soap, 103, 246, 247 Soda, 86 Soda industry, 273 Sodium, 297 Soft water, 99, 102 Solar spectrum, 210, 211 Solder, 76 Solid carbon dioxide, 185 Solids in flame, 158 Solutions, their properties, 302- 313 Specific gravity, 262 Spectroscope, 206, 213 Spectrum analysis, 206, 213 Speed of gas molecules, 49 Spirits of salt, 82 Spontaneous combustion, 127, 128, 129 Sprinklers, 76 Stalactites, 100 Stalagmites, 100 Starch, 231-234, 265, 266 Stearine candles, 245 Steel, 63, 65 Storage cell, 295 Structure of flame, 156 Sugar, 228, 229, 230 Sugar-boiling, 309 Sugar solution, 303 Sulphur, 22, 171, 279 Sulphur dioxide, 184 Sulphur from coal, 146 347