ACETIC anhydride, 100
Affinity, 224; Berthollet on, 7;
distinguished from atomicity,
Alcohols, primary, secondary,
and tertiary, 295
Aluminium, atomicity of, 221
Ammonium, chloride, 114; car-
bamate, 115; sulphydrate, dis-
sociation of, 114
Ampère, 38
Amyl alcohol, isomers of, 336
Amylene, dissociation of bromide,
111; isomers of, 291
Anaxagoras, 305
Anhydrides, constitution of, 86, 99
Antimony, sesquioxide, constitu-
tion of, 227
Apatite, 180
Arsenic, constitution of acids of,
241; density of, 69, 120;
organo-metallic compounds of,
272
Atomic constitution of mole-
cules, 298
Atomic volumes, 187
Atomic weights of Berzelius, 62;
how determined, 61; of Dal-
ton, 25, 29; present system of,
92
Atomicities, supplementary, 232,
Atomicity, a relative property,
226; definition of, 19, 226;
distinguished from affinity,
Carbon, atomicity of, 211, 234;
monoxide, 235; specific heat
of, 127
Chloral hydrate, dissociation of,
115
Chlorine, variable atomicity of,
229
Chloroplatinates, 253
Chromic compounds, constitution
of, 222
Chromium sesquioxide, formula
of, 60
Classification, of elements, 150,
155; natural, 176, 215, 265
Clausius, 316
Clerk Maxwell, 317
Constitution of bodies, 259; of
matter, 305
Constitutional formulæ, 291, 298
Cooper, 235
Copper, hydride, 207
Cuprous compounds, constitution
Gaudin, 254
Gautier, 236
Gay-Lussac, 34, 64, 77
Gerhardt, reform in atomic
weights, 80
Glycerine, compounds of, 89,
200, 185; constitution of, 283
Glycol, 89; discovery of, 202
Gmelin, objections to atomic
weights of Berzelius, 71
Graphite, 128
IODINE, variable atomicity of,
230
Iron, atomicity of, 221, 233
Isomerism, Berthelot on, 287
Isomers of amyl alcohol, 336;
of amylene, 291; of trichlor-
hydrin, 286
Isomorphism, definition of, 145;
discovery of, 56; formulæ de-
termined by, 139; influence
on atomic weights, 60, 138
KANT, 306
Kekulé, 211, 213
Kinetic theory of gases, 315
Kirchhoff and Bunsen, 323
Kolbe, 295, 336
Kopp, on molecular heats, 131;
on atomic volumes, 189
Kundt and Warburg, 121
LACTIC acid, 302
Laurent, 84
Lavoisier, 4, 18
Law of Avogadro and Ampère,
36, 42, 95; of Dalton on pres-
sure of mixed gases, 316; of
definite proportions, 3; of Gay-
Lussac, 34, 95; of Dulong and
Petit, 53; of isomorphism, 56;
of Mariotte, 315, 320; of Men-
delejeff, 158; of multiple pro-
portions, 24; of proportion-
ality, 11; of Proust, 10
Le Bel and Van't Hoff, 300
Lead tetrachloride, 249
Lesage, 309
Lorschmidt, 319
MARIGNAC 114, 146
Mariotte's Law, 315, 320
Marsh gas, a type of compounds,
300
Matter, constitution of, 305;
discontinuity of, 308
Mendelejeff, 154
Mercurous compounds, constitu-
tion of, 223; formulæ deter-
mined by specific heat, 135
Mercury, density of, 67, 121;
specific heat of vapour, 122
Methyl, 100, 273; carbylamine,
236; cyanide, 236; oxide
chlorhydrate, 231, 250
Meyer, Lothar, 163, 167
Mitscherlich, 56
Molecular combinations, 248;
diameters, 320; dissymmetry,
301; heats, 130; symmetry,
300; volatilities, 136
Molecular volumes of liquids,
189; of solids, 194
Molecules, integral and element-
ary, 38; mean
316; number in unit volume
of gases, 322
Monatomic gases and vapours,
NASCENT state, 208
Naumann, 115
Neutrality, permanence in mu-
tual decomposition of salts, 13
Nicklès, 249
Nitrogen, atomicity, 227; binox-
ide, Dalton on, 23; chloride,
210; constitution of acids of,
241; substitution derivatives,
219
ODLING, 90, 199, 203
Organo-metallic radicals, ato-
micity, 271
Oxygen, atomicity, 218, 231
Ozone, 119
PERIODIC Law, 158, 163, 170
Peroxides, constitution of, 219,
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