490 Dr. Gore on the Greater Influence of First Quantities 



Fig. 9. 

 Potassium Chloride, at 27° C. 



Volts. 

 1-310 



Unit quantity = 10,000. 



Point of Saturation. 



10 15 20 25 30 Zo 40 45 OO 

 Grains per 10 o. c. H 2 0. 



These curves and numbers show that increasing the unit 

 quantity of salt added from '0005 grain in the first section to 

 5 grains or 10,000 times the amount, in the last one, only 

 produced about 5*27 times the amount of average difference 

 of electromotive force, and therefore the addition of the same 

 weight (i. e. '0005 grain) had only about one 1897th part 

 of the average effect upon the electromotive force in the series 

 of strong solutions that it had in the weak ones. 



In all these cases the phenomenon was produced, either by 

 increasing the degree of dilution or that of concentration of 

 the liquid, and not by strong chemical union. In order 



