58      Royal  Society  : — Mr.  G.  Gore  on  the  Thermo-electric 
Chloride  of  Cobalt. 
Value  of 
Ounces  diluted  Deflection. 
No.  to  12  ozs.  (     Hot  copper  posi- 
1 |  oz.  saturated  solution  -1247  J  tive.  Liquid  acid.  No 
2 3  ozs.        „  „  1*2726  j  stains,  except  slightly 
(  at  edge  of  hot  liquid. 
Protosulphate  of  Iron. 
Grains  diluted  Value  of 
No.  to  12  ozs.  Deflection. 
1 200  ....  -0198    Hot  copper  negative. 
2 800  ....  .0794f  No  stains  on  either 
•  I.     plate. 
Chloride  of  Manganese. 
Grains  diluted  -n  a    ,  •  •  -  ■  • 
No.  to  12  ozs.  ,  Deflects 
1 100  -0436       Hot  copper  pos itive. 
)  No  stains. 
2 1000  ....  1-0995  |     Liqmd  neutral,  or 
( very  iamtly  acid. 
Chromic  Acid. 
Value  of 
Ounces  of  strong  solution  Deflection. 
No.        diluted  to  12  ozs.  ■  *  ■ .  i      Hot copperpositive. 
1 \  .       -0987  )  Both platesmuch  acted 
2 2  .  18-8034 1  upon,  apparently  the 
<    • «  ( cold  one  the  most. 
Chloride  of  Chromium. 
Value  of 
„  -   ,  ,  L.  Deflection.  ;"■:■..:         .     : 
Ounces  of  strong  solution  tt„i  n~„„n„  „«„:+:,,„ 
No.        diluted  to  10  ozs.  (     Hot  copper  .pqsitive 
ii  .  ,    ..Q993  \  -'-iie   P^tes  .  appeared 
J  , , ,    ioiq  -{unaffected.  .Thesqlu- 
Nitrate  of  Lead. 
tion  was  weakly  acid 
to  test-paper. 
Value  of 
No.  Grains.  Deflection. 
1 100  diluted  to  12  ozs.  .Q009  J     Hot  plate  negative, 
)  No  stains. 
2 Saturated  solution  (undiluted)  -0259  j  fai^U^id  extremel? 
Sulphate  of  Zinc. 
Grains  diluted  Value  of                                        & 
No.               to  20  ozs.  Deflection. 
1 287            -0080    Hpt  copper  negative.  (.Liquid 
2 574         .......  -0048       ,    „         positive.  J. neutral. 
