330 



Mr. G. Gore on the Thermo-electric 



[Feb. 23, 



Nitrate of Sodium, 



Grains diluted Value of 



No. to 20 ozs. Deflection. 



1 85 .... -0025 Hot copper negative. ) T • . , 



2 255 .... -0328) ^ % 



3 510 -1015 [ » positive. f neutral. 



Chloride of Sodium. 



Value of 



No. Grains. Deflection. 



1 12-5 diluted to 20 ozs. -0001^ 



2 25 „ „ -0012 



3. . . . . 50 „ „ -0081 



4 75 „ „ -0153 



5 100 „ „ -0293 



6. .... 150 „ -0512 



7 200 „ „ -0819 Hot copper positive.^ Tar- 



8 250 n „ -1016 ( nish at edge of hot liquid, 



9 300 „ „ -1160 f especially with the strongest 



10 400 „ „ -1906 solutions. 



11 500 „ „ -2241 



12 600 „ „ -2708 



13 800 „ „ -3473 



14 1000 „ „ -4884 



15 2000 „ „ -4237 



16 Saturated solution (undiluted) *3479 J 



Iodide of Sodium. 



Grains diluted Value of 



No. to 12 ozs. Deflection. 



1 100 .... -0100 Hot copper negative. \ Liquid alkaline. 



2 1000 -0819 „ positive. \ No stains. 



No. 

 1. 

 2. 



Grains diluted 



to 20 ozs. 

 . 286 



, . 572 



Carbonate of Sodium. 



Value of 

 Deflection. 

 •0468 

 •1673 



Hot copper positive. 

 Liquid alkaline. 



Biborate of Sodium. 



Six ounces of a saturated solution diluted to 12 ounces. Hot copper 

 was positive; value of deflection *0452. 



Sulphate of Sodium. 



Grains diluted Value of 



No. to 20 ozs. Deflection. 



1. . . p .... -0001 Hot copper negative. ) 



2 100 .... -0009) /Liquid 



3 200 .... -0016 V „ positive, (neutral. 



4 1000 .... -0170 J 



