256 INDEX.PAGE
Octets of atoms 12
Oersted 81
Optical isomers 182
rotation 154
Organo-complexes 153
Osmotic pressure 49
Ostwald's dilution law 67
Oxide hydrogels 41
Oxides 56
Oxides, hydrated 41
Oxydimercurammonium hydroxide 162, 163
Oxycobaltammine chloride 173Palladium-hydrogen 64
Passive condition 38
Peptonization 40
Periodic classification of the elements 9
Periods in the classification of the elements 13
Perchloric acid 118
Peroxides 101
Petalite 219
Peyrone, Salt of 168
Phosphides 96
Phosphorous acid 136
Phosphorus, constitution of acids of 135
oxychloride 77H
pentachloride 77G
as a chlorinating agent , 201, 203
pentasulphide 85
Phosphorus residues, disposal of 77o
trichloride 77G
Phosphine 97
Phthalic acid from naphthaline 60
acid anhydride 61
Pitchblende 231
Platinized asbestos 59
Platino-ammonia compounds 168
Platinotypes 153
Platinum ammonia compounds 166 et seq.
as catalyzer 43, 59, 70
colloidal 42
Platosammine chloride 168
Poisoning of catalyzers 43
Polyhalogen compounds 107
Polymerization 32
Polynitrides 112