X TABLE OF CONTENTS.
PAGE
THE PASSIVE CONDITION 38- Passive Iron 38
AMORPHOUS STATE 38 - Amorphous Sulphur 39
COLLOIDAL STATE 39
ADSORPTION COMPOUNDS 41 - Colloidal Platinum, according to Bredig 42
- Colloidal Antimony Sulphide 43
- Adsorption of Iodine by Charcoal; Adsorption Curve 44
- Lanthanum Blue 45
- Molybdenum Blue 46
- Colloidal Gold Solutions; Precipitating Colloids and Protec-
tive Colloids 47 - Hydrogels as Semipermeable Membranes 49
CHAPTER III.Simple Compounds 51
OXIDES 56
- Liquid Sulphur Dioxide 56
- Sulphur Trioxide by the Contact Process 58
Oxidation of Naphthalin with Sulphuric Acid 59 - Nitrogen Dioxide — Detection of its Association and Dis-
sociation 61 - Chromic Oxide in the Dry Way from a Chromate 63
- Cuprous Oxide 63
HYDRIDES 63 - Cerium Hydride 64
- Copper Hydride 65
ACIDS, BASES, AND SALTS 65
(a) Acids and Bases 69 - Physico-chemical Detection of Electrolytic Dissociation 69
- Hydrobromic Acid — Hydriodic Acid 70
- Thallous and Thallic Hydroxides 72
(6) Halogen Compounds 73 - Cupric and Cuprous Bromides 73
- Cuprous Chloride 74
- Potassium Iodide — Iodine from Iodide Residues 74
- Barium Chloride from Witherite 77
- Manganous Chloride from Waste Manganese Liquors 77
- Anhydrous Ferric Chloride; Preparation of Chlorine 77A
- Anhydrous Ferrous Chloride; Preparation of Hydrogen
Chloride 77C - Anhydrous Chromium Trichloride 77D
- Sulphur Chloride, S 2 C1 2 77E
- Chlorides of Phosphorus 77F
- Chlorides of Antimony 77H