6 Dr. Kane on the Compounds of Ammonia. 



Sulphuric acid = 8.18 



Ammonia = 3.48 ■ 13.50 



Water =: 1.84 . 



Tabulating the results of these three methods, there is obtained for ammonia- 

 turpeth 



The positive values obtained by analysis give the proportions in ammonia- 

 turpeth to be : 



1 atom of sulphuric acid. 

 1 atom of ammonia. 

 4 atoms of mercury. 



But for the oxidation of the mercury there would be required (as, from the solu- 

 bility of ammonia-turpeth in muriatic acid, the whole of the mercury is proved to 

 be in percombination) oxygen := 6.582, a quantity which is altogether excluded 

 by the sum of the values of the other ingredients, which leave room for only 4.84 

 of oxygen. Now this number is almost exactly three-fourths of 6.582, since 

 § . 6.582 = 4.937 ; and we have consequently the most complete evidence that 

 the fourth atom of metal is combined with some other negative radical than 

 oxygen. If one conceives that in this ammonia-turpeth the azote and hydrogen 

 exist as amidogene, the formula falls in accurately with the experimental results, 

 for there is 



8.27 Analysis = 8.25 



3.32 = 3.27 



83.47 = 83.43 



4.94 = 5.05 



485.90 100.00 100.00 



By this formula 100 of sulphate of mercury should give 81.30 of ammonia-tur- 

 peth, while in experiment B there was obtained 81.48. 



It will be seen that the formula h^o. SO3 + 2 ugo -\- Hg nHj is completely 



