183 



Dr. Kane found the ammoniacal chloride of copper to 

 be CM c/ H- 2 NH3 + HO. or correctly, NH3. h cl + NH3. cu o. 

 By heat NH3 ho is lost, and there remains NH3. h cu cl. By 

 water there is generated a new basic chloride of copper, 

 having the formula cud -{-^cuo -j- 6 ho. The common 

 Brunswick green cu cl-^S cu o + 4 ho. Dr. Kane has ob- 

 tained with 6 HO in place of 4 ho. and these oxychlorides he 

 considers as formed on the type of the ordinary chlorides, 

 combined with water, or with metallic oxides in other groups. 



1 — CM. c/ 4- cw o -}- ^ (C2^ o 4- ^ Ho) 

 2— CMC/ 4- 3 (cm 04- 2 Ho) 



3—CM c/ 4- CM o 4- 3 (cm o 4- 2 ho). 



When No. 2 is heated, it loses all water, but if then put 

 into contact with water, it regains 4ho, and becomes perfect 

 Brunswick green No. 1. cm c/. cm o 4- 2 (cm o 4- 2ho). 



The second equivalent of oxide is, in these chlorine 

 bodies, much less forcibly held than in the sulphates, but 

 that it is differently related to the acid than the remaining 

 equivalents of oxide or of water is proved by a great variety 

 of facts. 



The ammoniacal nitrate of copper has the formula cmo 

 NO5 4- 2 NH3. or (NH3.H0.) N05 4- CMNH2. hence this body 

 contains, united with the copper, amidogen ; when heated it 

 explodes, the copper and amidogen burning in the nitrous 

 oxyde yielded by the nitrate of ammonia. To obtain some 

 analogical evidence regarding this body. Dr. Kane re-ex- 

 amined the ammonia-sulphate and nitrate of silver, and found 

 George Mitscherlich's results good. Dr. Kane, however, 

 writes the formulae 



1 — (NH3.H0). RO3 4- A^.NH2 



2 — (NH3.HO) NO5 + Ag NH2. 



This last salt, when heated, gives a beautiful decomposition ; 

 the nitrate of ammonia fuses readily, and at a temperature 

 below that at which it decomposes, the amide of silver is 

 resolved into ammonia, nitrogen, and metallic silver, which 



