XIV CONTENTS 



74. The relation of electroendosmosis and electrophoresis to the ionic 



theory 254 



75. Perrin's experiments 256 



76. The isoelectric point of diaphragms 259 



77. Application of the acidoid theory to the sign of charge on diaphragms . . 261 



78. A consideration of the other ions 265 



79. Summary of the theory of the formation of an electric charge on dia- 



phragms 269 



80. Changes in concentration, especially of the H-ions in electroendos- 



mosis 271 



81. The history of the theory of adsorption potentials 277 



82. Hydrodynamic potentials 279 



83. The influence of electrokinetic potentials upon surface tension 284 



84. A summary of electrokinetic phenomena 284 



85. The splitting of phase boundary potentials 285 



86. Coehn's rule 288 



87. The significance of adsorption potentials in physiology and colloidal 



chemistry 290 



Index op Authors 293 



Subject Index 297 



