1888.] Voltaic Couple by Variation of Strength of Liquid. 299 



Table VI. — Bromine in 465 grains of Water at 12*5° C. 



Grains. 



Yolts. 



Grains. 



Volts. 



20-10 



1 -9746 



9-84 



1 -9089 



18 -39 



1 -9603 



8-13 



1 -8974 



16-68 



1 -9517 



6-42 



1 -8775 



14-97 



1 -9403 



4-71 



1 -8715 



13-26 



1 -9317 



3-00 



1 -8743 



11-55 



1 -9203 







The strongest of these solutions was a saturated one. The electro- 

 motive force first decreased and then increased almost regularly with 

 the strength of the liquid up to the saturation point. The total 

 amount of increase was 0*13 volt. 



Table VII.— Ditto at 16° 0. 



Grains. 



Yolts. 



Grains. 



Yolts. 



3-0 



1 -8746 



1-5 



1 -7400 



2-85 



1 -8173 



1-35 





2-7 



1 -7973 



1-2 



1 -7229 



2-55 



1 -7887 



1-05 



2-4 



] -7687 



0-9 



1 -7200 



2-25 



1 -7573 



75 



1-7172 



2-1 





0-6 



1 -7027 



1-95 



1-7458 



0-45 





1-8 



5> 



03 



>> 



1-65 



>> 



15 





By gradually increasing the strength of the liquid, the electro- 

 motive force at first remained uniform, then increased, remained 

 uniform again, then gradually increased, finally at a rapid rate. The 

 total increase was 0"1719 volt. 



Table VIII.— Ditto at 13-7° C. 



Grains. 



Yolts. 



Grains. 



Yolts. 



-0004 



1 -2888 



-0001235 



1-1658 



-0003605 





-000084 



1 1515 



000321 



1 -2802 



'0000445 



1 -1086 



-0002815 



1 -2745 











-000242 



1-2459 



-0000081 



937 



-0002025 



1 -2316 



-000005 



0-9084 



-000163 



1 1944 



Water. 



» 



VOL. XLIV. 2 A 



