1871.] 



Action of Metals and Liquids. 



333 



No. 

 1. 

 2. 

 3. 



Grains diluted 

 to 20 ozs. 

 80 



, . 240 

 . . 480 



Nitrate of Ammonium. 



Value of 

 Deflection. 

 '0002 ) 



■0228 1 P^ e ne 8' a ^ ve « 



:::: -oSoo reaction - 



Acid 



Chloride of Ammonium. 



No. 



1. 



2. 



3. 



4. 



5. 



6. 



7. 



8. 



9. 

 10. 



Grains 

 25 dill- 

 50 



100 



200 



400 



800 

 1000 

 1600 

 2000 



ted to 20 ozs. 



Value of 

 Deflection 

 •0020 

 •0029 

 •0147 

 •0647 

 •1583 

 •5551 

 •6744 

 •6258 

 •7479 



Hot copper positive. So- 

 lutions extremely faintly 

 acid. Both plates tarnished 

 ^-by the stronger solution ; 

 but the hot one the most 

 so, and a little copper was 

 dissolved. 



Saturated solution (undiluted) '1210^ 



Scheele's strength, 

 flection -0006. 



No. 

 1. 

 2. 



Grains diluted 



to 12 ozs. 

 , . 100 

 , . 1000 



Aqueous Hydrocyanic Acid. 

 The hot plate was feebly positive. 



Cyanide of Potassium. 



Value of de- 



Value of 

 Deflection. 



( Hot copper positive. Much 

 •2854 J gas evolved from the hot 

 T8164 1 plate only in the strongest 

 ( solution. 



Ferrocyanide of Potassium. 



No. 

 1. 

 2. 



No. 

 1. 

 2. 

 3. 

 4. 

 5. 

 6. 



Grains diluted 



to 20 ozs. 

 . . 500 

 . . 1000 



Value of 

 Deflection. 



C Hot plate positive. Li- 

 •0136 \ quid feebly alkaline. Both 

 •0045 1 plates became pink like new 

 ( copper. 



Oxalic Acid. 



Grains. 



25 diluted to 20 ozs. 



50 „ 

 100 „ 

 200 „ 

 400 „ 



Value of 

 Deflection. 

 •00011 

 •0002 | 

 •0006 [ 

 •0016 

 •0064 



Saturated solution (undiluted) -0070 



The hot plate was nega- 

 tive, and the plates were 

 not tarnished at all. 



Glacial Acetic Acid. 

 The hot plate was negative. Seven solutions, containing from ^ ounce 

 to 4 ounces by measure of the acid in 20 ounces by measure, gave only 

 extremely feeble currents. The plates remained bright. 



