448 Mr. G. Gore on the Electrical Relations of 



aluminium, aluminium and zinc, zinc and platinum, iron and 

 carbon, silver and copper. 



Iodide of Potassium. — Aluminium, zinc, iron, silver, copper, 

 platinum. Reversals of current with copper and silver, copper 

 and platinum, iron and zinc, probably from salt solidifying 

 around the electrodes and subsequently fusing. 



Bromide of Potassium. — Zinc, iron, copper, silver, platinum. 

 Reversal of current with iron and zinc. 



Chloride of Potassium. — Aluminium, zinc, iron, copper, silver, 

 platinum. Reversals with silver and platinum, silver and cop- 

 per, silver and iron, iron and copper, iron and zinc. 



Chlorate of Potash. — Zinc, aluminium — iron, silver, copper, 

 platinum. The currents were feeble, they were also indefinite 

 until gas was evolved. 



Nitrate of Potash. — Aluminium, zinc, copper, silver, iron, 

 platinum. 



Nitrate of Potash. — Tin, lead, aluminium, carbon, copper, 

 iron, zinc, platinum, silver. Currents very feeble. Reversals 

 with iron and platinum, iron and silver, carbon and copper. 

 Carbon evolved much gas. 



Hydrate of Soda. — Zinc, iron, carbon, copper, silver, platinum. 

 Reversals with silver and platinum, copper and iron, carbon and 

 iron. Moving either platinum or silver made each more positive, 



Biborate of Soda. — Zinc, carbon, iron, copper, silver, platinum. 

 Iron and zinc evolved gas. 



Mono -'pyrophosphate of Soda. — Iron, copper, silver, carbon, 

 platinum. Reversal with silver and carbon. 



Sulphide of Sodium. — Zinc, copper, silver, iron, platinum, 

 carbon. Reversals with iron and carbon, iron and platinum, 

 iron and silver. Iron much dissolved. 



Hyposulphite of Soda. — Aqueous fusion. Zinc, carbon, cop- 

 per, silver, iron, platinum. 



Bisulphate of Soda. — Aqueous fusion. Iron, copper, silver, 

 carbon, platinum. Reversal with iron and platinum. Gas 

 evolved by iron. 



Iodide of Sodium. — Iron, silver, copper, carbon, platinum. 

 Reversals with platinum and silver, platinum and copper, pla- 

 tinum and carbon, carbon and copper, copper and silver, copper 

 and iron, silver and iron. 



Bromide of Sodium. — Zinc, iron, copper, silver, platinum. 

 Reversals with platinum and silver, iron and zinc. 



Chloride of Sodium. — Iron, copper, carbon, silver, gold, pla- 

 tinum. Reversals with carbon and copper, carbon and iron. 



Nitrate of Soda. — Aluminium, zinc, carbon, copper, silver, 

 iron, platinum. Reversals with iron and silver, iron and copper, 

 carbon and copper. Carbon evolved much gas. 



