Decrepitation 55 Deliquescence 55 Density of gases 230 Desiccating agents 55 Developers 367 Dewar bulb 91 Dextrose 414 Diamond 197 Dichromates 385 Dichromic acid 385 Dimorphous substances 163 Dissociation 99 and boiling point 101 and freezing point 101 equations of 112 extent of 113 Distillation 50 Dogtooth spar 306 Dolomite 319 Double decomposition 71 Drummond light 38 Dyeing 333 Dynamite 409 Earth metals 327 Efflorescence 54 Electric furnace 221 Electro-chemical industries 269 Electrode 99 Electrolysis 99 of sodium chloride 102 of sodium sulphate 103 of water 41, 102 Electrolytes 99 Electrolytic dissociation 99 Electroplating 366 Electrotyping 359 Elements, definition 8 atomic weights 232 earlier classification 165 names 11 natural groups 165 number of 9 occurrence 10 periodic division 166 physical state 10 symbols of 11 Emery 331 Energy 4 and plant life 89 chemical 5 conservation of 4 transformation of 5 Enzyme 405 Epsom salts 320 Equations 68 are quantitative 72 knowledge requisite for 69 not algebraic 74 reading of 69 Equilibrium 138 chemical 138 in solution 139 point of 138 Equivalent 224 determination of 224 elements with more than one 225 relation to atomic weight 224 Etching 177 Ether 411 Ethereal salts 409 Ethers 411 Ethylamine 412 Ethylene series 399 Eudiometer 43 Evaporation 11 Families in periodic groups 170 triads 165 Family resemblances 170 Fats 409 Fatty acid series 405 Feldspar 261, 335 Fermentation 404 acetic 406 alcoholic 404, 405 lactic 414 Ferric chloride 352 hydroxide 352 salts 351 reduction 353 sulphate 352 Ferrochromium, 383 Ferromanganese 343 Ferrosilicon 259 Ferrous carbonate 351 salts 350 oxidation of 353 sulphate 350 sulphide 350 Fertilizers 245 Filtration 6, 51 beds 52 Fire damp 202 Flames 213 appearance 214 blowpipe 216 Bunsen 214 conditions for 213 hydrogen 34 luminosity 216 oxidizing 214 oxyhydrogen 37 reactions 296 reducing 214 structure 214 Flash lights 317 Flint 260 Fluorides 177 Fluorine 175 Fluorspar 175, 308 Fluosilicic acid 259 Flux 340 Fool's gold 351 Formaldehyde 405 Formalin 405 Formic acid 406 Formulas 68 how determined 234 structural 119 Fractional distillation 51 Franklinite 321 Fuels 220 Furnace, arc 221 electric 221 resistance 221 Fusion methods 271 Galena 373 Gallium 327 Galvanized iron 323 Gas, collection of 15 coal 217 fuel 217 illuminating 217 measurement of 23 natural 219 purification of 218 water 219 Gases, table 220 Gasoline 400 German silver 323, 359 Germanium 370 Germs, effect of cold on 53 in air 84 in water 52 Glass 262 coloring of 263 etching of 177 molding of 263 nature of 263 varieties 263 Glauber's salt 281 Glazing 336 Glucose 414 Glycerin 405 nitrates of 409