DOUBLE COMPOUNDS. 



35 



Oxygen ) forming sulphuric ] 



Sulphur \ acid ! forming sulphate of 



O^yg^n j forming iron oxide J ^'''' ^S^^^"" copperas). 



Oxygen ) forming sulphuric 1 f „„„}„„ <,„]Tihatp of 

 Sulphur \ acid ' copper^ bfu^'lne! 



blue copperas). 



Sulphi 



Oxyen ) forming copper ox- 

 Copper j ide 



Oxygen ) forming carbonic 

 Carbon j" acid 

 Oxygen \ forming copper 

 Copper j oxide 



Hydrogen ) forming muriatic 



Chlorine | (hydrochloric acid) ^ehloride) of pot- 



forming carbonate of 

 copper (mineral green). 



I forming muriate 

 Kgln^'l^^™^''^ ^^"^^^^4 forming sulphate 



Oxygen ) 

 Sulphur j 



forming 

 acid 



sulphuric ( of ammonia. 





Oxygen ) forming carbonic "^ 

 Carbon j acid 

 Hydrogen ) forming ammo 

 Nitrogen ) nia 



forming carbonate of 

 ammonia. 



