INDEX. 



263 



PAGE. 



Hydrates formed by ions or molecules 143 

 in solution, theory of effect 

 of temperature on water 

 of crystallization as 



bearing on 17 



Hydrobromic acid 94 



Hydrochloric acid 93 



Hydroxide of ammonium 53 



potassium 48 



sodium 41 



Introduction 1 



Introductory 161 



Iodide of barium 64 



cadmium 72 



calcium 57 



lithium 32 



sodium 35 



strontium 60 



Iodides, as showing the relation between 

 water of crystallization and lower- 

 ing of the freezing-point 23 



Ion, mass of, decreases of, with rise in 



temperature 153 



Ions or molecules form hydrates ... 143 

 with largest hydrating power have 

 largest temperature coeffici- 

 ents of conductivity 154 



Iron salts 140 



Knight and Jones, work of 1 



Lactose 109 



Light, sources of 179 



Lithium bromide 31 



chloride 30 



iodide 32 



nitrate 32 



salts 135 



Lowering of freezing-point 26 



of freezing-point, relation be- 

 tween water of crystalli- 

 zation and 20 



Magnesium bromide 67 



chloride 65 



nitrate 68 



salts 138 



sulphate 



Manganese chloride 73 



nitrate 75 



salts 139 



sulphate 76 



Mannite 108 



Mass of ion, decreases of, with rise in 



temperature 153 



McMaster, work of 147 



Methods 7 



Methyl alcohol 101 



cobalt chloride in 244 



copper bromide in .... 255 



^chloride in 251 



Molecules or ions form hydrates 143 



Nature of the compounds formed 143 



New and old hydrate theory 143 



PAGE. 



Nickel chloride 76 



nitrate 78 



salts 139 



sulphate 79 



Nitrate of aluminium 88 



ammonium 51 



cadmium 72 



calcium 58 



chromium 89 



cobalt 82 



copper 85 



iron 92 



lithium 



magnesium 68 



manganese 75 



nickel 78 



potassium 44 



sodium 36 



strontium 61 



zinc 70 



Nitrates, as showing the relation be- 

 tween water of crystallization and 



lowering of the freezing-point 24 



Nitric acid 96 



Non-aqueous solutions 241 



Noyes and Coolidge 153, 233 



Old and the new hydrate theory 143 



Organic acids 110 



compounds 141 



Ota and Jones, work of 1 



Oxalic acid 112 



Papers already published on this same 



subject, references to 260 



Phosphate, ammonium sodium acid ... 40 



disodium 39 



of potassium, dihydrogen . . 45 



Phosphoric acid 100 



Photographic material 178 



Plates 182 



Potassium bromide 43 



carbonate 45 



chloride 42 



cupric chloride 49 



dihydrogen phosphate 45 



ferricyanide 46 



ferricyanide, dissociation of 46 



ferrocyanide 46 



ferrocyanide, dissociation of 47 



hydroxide 48 



nitrate 44 



salts 136 



sulphate 44 



Propyl alcohol (N) 103 



Reference lines, wave-lengths of 185 



References to papers already published 



on this same subject 260 



Refractivity curves, 118, 122, 123, 125, 126, 



128, 129 



method 8 



Relations, general 142 



Results.. 28 



