332 



Mr. G. Gore on the Thermo-electric [Feb. 23> 



No. 

 1. 

 2. 



No. 

 1. 

 2. 

 3. 

 4. 

 5. 

 6. 

 7. 

 8. 

 9. 



Both 



lodate of Potassium. 



Value of 



~ . Deflection. 

 100 diluted to 12 ozs. -0064 J , ^ ot P^e negative 



Saturated ^(^^) ^{^^^^ 



Acid Carbonate of Potassium. 



Value of 



Grains. Deflection. 

 50 diluted to 20 ozs. -0049 



100 „ „ -0170 



200 „ „ -0497 



400 „ „ -0818 



600 „ „ -1329 



800 „ „ -1978 



1000 „ „ -2441 

 2000 „ „ -4210 



Saturated solution (undiluted) -5451 



Hot plate positive. The 

 liquid on evaporation was 

 •green with dissolved copper. 

 Liquid alkaline. Hot plate 

 alone much tarnished. 



Carbonate of Potassium. 



No. 

 1. 

 2. 

 3. 

 4. 

 5. 

 6. 

 7. 

 8. 

 9. 



Grains. 



50 diluted to 20 ozs. 



100 



200 



400 



800 

 1600 

 2400 

 3200 



Value of 

 Deflection 

 ■0122^ 

 •0382 

 •1770 

 •3719 

 •7521 



2- 2400 



3- 7708 

 •4367 



Saturated solution (undiluted) '4031 



Hot plate positive. 



Acid Sulphate of Potassium. 

 Saturated solution (undiluted). Value of deflection -1047. Hot plate 

 negative. 



Bichromate of Potassium. 



No. 

 1. 

 2. 



Grains diluted 



to 20 ozs. 

 , . 295 

 . . 590 



Value of 

 Deflection. 



•1544 1 me ^ P os itive. 



No. 

 1. 

 2. 



Grains diluted 



to 20 ozs. 

 . . 249-8 

 . . 499-6 



Chrome Alum. 



Value of 

 Deflection. 

 •0019 I 



Hot metal negative. Li- 



•0064 f quid of acid reaction 



Aqueous Ammonia. 



Copper in a mixture of 4 ounces of water and 400 grains of aqueous 

 ammonia at 180° Fahr. was electro-positive to copper in the same mixture 

 at 60° Fahr. 



