'the Thermo- Electric Properties of Liquids. 527 



Gold plates. Current J 2-J. In each instance cold water reversed the 

 direction of the current feebly. 



No. 101. 14 oz. of water and \ oz. of partly dried borax. Palladium 

 plates. Current J 2. Gold plates. Current J 2J. Platinum plates. 

 Current J 4^. (Compare No. 134.) Cold water reversed the current 

 feebly in each case. 



No. 102. 8 oz. of water and 6 oz. of a saturated solution of chloride 

 of strontium. Liquid neutral. Palladium plates. Current J If. Cold 

 water feebly reversed the current. Platinum plates. Current j 1\ at 

 140° F., and J \ at 210° F. Cold water produced a rather strong- 

 downward current, and then a feeble upward one. Gold plates ; no 

 current. Cold water produced a weak J current. 



No. 103. 10 oz. of water and 4 oz. of dry chloride of nickel. Solu- 

 tion acid to litmus paper. Gold plates. Current f Platinum plates. 

 Current \ 3^-. (Compare No. 141.) Cold water reversed the current 

 feebly in each instance. 



No. 104. 3 oz. of dry bromide of copper made into 14 oz. of solution 

 with water. Liquid acid to litmus paper. Gold plates. Current f 1\. 

 Platinum plates. Current J 75 \. Cold water greatly reduced the cur- 

 rent in each instance. 



No. 105. The same mixture, with 1 oz. of hydrobromic acid of sp. 

 gr. 1*45 added to it, to redissolve a little basic salt which had subse- 

 quently separated. Platinum plates. Current f 73^. (Compare No. 111.) 

 Sufficient cold water reduced the deflection to zero. 



No. 106. 14 oz. water, and 2 oz. of dry bromide of nickel. Acid 

 reaction to litmus paper. Gold plates. Current f 42. Cold water 

 quickly brought the needles to zero.. Platinum plates. Current j 51 

 at 200° P. and 48 at 210° F. (Compare No. 139.) ' Cold water pro. 

 duced a strong \ current, permanent for a time. 



No. 107. 14 oz. of water and 1 oz. of dry bromide of cobalt. Solu- 

 tion acid to litmus paper. Gold plates. Current f 16. Platinum 

 plates. Current f 43-J. (Compare No. 140.) Cold water reversed the 

 current in each instance. 



No. 108. 14 oz. of water, and ^ oz. of pure potassic hydrate. Pla- 

 tinum plates. Current J 26 at 210° F., increased to 60 by persistent 

 heat, and was still increasing. (Compare Nos. 87, 112, and 142.) Cold 

 water then reduced the current greatly. The washers imparted a 

 slightly yellow colour to the upper layer of liquid. Two more experi- 

 ments were made with this solution, the washers being again digested 

 several hours in a strong and hot solution of caustic soda before each 

 experiment ; the quantity of the electric current diminished in each 

 experiment. 



No. 109. 14 oz. of water, and 1 oz. of cyanide of potassium. Iron 

 plates. Current { 25 at 140° F. No signs of corrosion of the plates 

 were visible. (Compare Nos 145, 167.) 



