262 



INDEX. 



PAGE. 



Chloride of strontium 58 



zinc 70 



potassium cupric 49 



Chlorides, as showing the relation be- 

 tween water of crystallization and 



lowering of freezing-point 21 



Chromate of sodium 37 



Chromic acid 98 



Chromium chloride 89 



nitrate 89 



salts 140 



Citric acid 115 



Cobalt chloride .80. 187 



and aluminium chloride 205 



calcium bromide. . . 200 



chloride. . . 1 94 



in acetone 247 



ethyl alcohol 245 



methyl alcohol 244 



nitrate *. 82 



salts 1 39 



sulphate 83 



Coefficients, temperature, bearing of 



hydrates on 154 



Composition of the hydrates, calcula- 

 tion of the approximate 28 



Compounds formed, nature of 143 



Conclusions 259 



and summary 144 



from the earlier work 14 



Conductivities 27 



Conductivity apparatus 5, 177 



curves, 117, 118, 119, 120,121, 

 123, 124, 125, 127, 129 

 large increase in with 

 rise in temperature, 

 due to decreasing 

 complexity of hy- 

 drates 156 



method 8 



Copper bromide and aluminium chlo- 

 ride 230 



calcium bromide 226 

 chloride 224 



in ethyl alcohol 256 



methyl alcohol . . . 255 



chloride 84 



and aluminium chloride 221 



calcium bromide. . 215 



chloride. . 213 



in acetone 253 



ethyl alcohol 252 



methyl alcohol 251 



nitrate 85 



salts 139 



sulphate 86 



Cupric ammonium chloride 52 



bromide 192 



chloride 190 



potassium chloride 49 



Curves, conductivity, 117,118,119,120,121, 

 123, 124, 125, 127, 129 



Curves, freezing-point, 116, 



121, 

 127, 



hydrate 130, 131, 



refractivity,118, 122, 123, 



PAGE. 



117, 119, 120, 

 122, 124, 125, 

 128, 133, 134 

 132, 134 

 125, 126, 

 128, 129 



Crystallization, water of, and lowering 

 of freezing-point, 

 relation between. . 20 

 water of, greater the 

 lower the tempera- 

 ture 18 



Data and facts 186 



Bichromate of sodium 38 



Discussion of the results 135 



several theories 232 



Dissociation of potassium ferricyanide . 46 



ferrocyanide . 47 



Disodium phosphate 39 



Earlier work, conclusions from 14 



Ethyl alcohol 102 



cobalt chloride in 245 



copper bromide in 256 



chloride in 252 



Evidence for the existence of hydrates 17 



Experimental work 25 



Exposures and spectrograms 180 



Facts and data 186 



Ferric chloride 90 



nitrate 92 



Ferricyanide of potassium, dissociation 46 



Ferrocyanide of potassium 46 



dissociation 47 



Frazer and Chambers, work of 3 



Freezing-point apparatus 177 



curves, 116, 117, 119, 120, 

 121, 122, 124, 125, 

 127, 128, 133, 134 

 lowering, relation be- 

 tween water of crys- 

 tallization and. ... 20 



lowerings 26 



method 7 



Fructose 107 



General relations 142 



Getman and Bassett, work of 17 



Getman, earlier \vork of 3 



Glucose 107 



Glycerol 106 



Hydrate curves 13p, 131, 132, 134 



Hydrate, decreasing complexity of with 

 rise in temperature, is 

 largely the cause of in- 

 crease in conductivity. . . 156 



theory, new and old 143 



theory proposed by Jones . . 2 

 Hydrates, bearing of, on the tempera- 

 ture coefficients of con- 

 ductivity 153 



calculation of the approxi- 

 mate composition of ... 28 

 evidence for existence of . . 17 



