410 



Dr. G. Gore on a New Method and 



Fig. 8. 

 Curve of HC1 with Cd at 14° 0.— Strong Solution. 



Grains, r r ?* 



7. Curves of KC\, KBr, and KI. 



All the substances were highly pure, colourless, and inodo- 

 rous ; the iodide was very faintly alkaline. The solutions were 

 of the same range of degrees of strength as the strong ones of 

 the corresponding acids, viz. from *1 to 1*0 grain of substance 

 in 1 55 grains of water. The electromotive force of the zinc- 

 platinum couple increased somewhat with the period of immer- 

 sion. The absence of solid films upon the zinc was proved 

 by occasionally replacing the saline liquid by distilled water, 

 and observing whether the cell was still exactly balanced by a 

 zinc-platinum water one. 



