Dr. Kane on the Compounds of Ammonia. 79 



pies one portion of the formula, leads naturally to the study of still more 

 remarkable cases of the operation of these principles. 



The bodies 



1. HO.SOa.HAC?-}- HO. 



2. HO.SOj.HAcf-f-ZnO. 



3. CMO.SOj.HAC?. 



4. zwo.sO3.HArf. 

 and in the quicksilver compounds, 



5. Hg-O.N05.HArf-f-2H^O. 



6. i{go.^OyHgh.d -\-2iigo. 



7. ngo.sOyUgkd-\-2ugo. 



present to our view a series passing from common sulphate of ammonia to am- 

 monia turbith, in which the successive stages of replacement of hydrogen by 

 metal are so connected, and follow so naturally, that it appears to me very 

 difficult to refuse consent to the proposition that the latter members are consti- 

 tuted on the type of the former, and consequently that we may have forms of 

 ammonia salts, in which the oxygen and amidogene are combined, not with 

 hydrogen, but with metal, and in which, therefore, the peculiarly basic character 

 should preponderate. 



If we now for a moment contemplate the formula of a double ammonia sul- 

 phate of that class, whose history has been cleared up by Graham, it will be 

 foimd that some considerations of a most interesting nature will result from their 

 relations to the group last noticed. The double sulphate of copper and ammonia 

 is , , _ 



HO.SO3. HArf -\- CMO.SO3 -J- 4hO. 



Graham had himself suggested the following form for the ammonia sulphate of 

 copper described by Rose, 



CMO.SO3.HArf -|- CMOSO3 + 4 HArf, 



but only as a speculation, the state of our knowledge of the ammonia compounds 

 then not allowing the proper demonstration of its truth. The majority of 

 sulphates absorb, however, a whole number of equivalents of ammonia, thus 

 there is 



