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out is considered a dehydration phenomenon. The washing property of soap is due to its emulsifying capacity for dirt, much more than to alkaline dissociation. In general, electro¬ lytic dissociation and mass action are considered of minor importance in these colloid systems. In Part III the author attempts with more than fair success to show that the points established for the better understood and more easily investi-. gated alkali-fatty-acid mixtures hold also for the more com¬ plicateddoi:10.1001/jama.1922.02640600064046 fatcat:5npnghvp4jfonevcpllgo5tc7u