116 Dr. Kane on the Combinations derived Jrom Pyroacetic Spirit. 



dry ammonia without alteration. Their composition was determined by the 

 following analyses : 



A. 0.352 of the crystals gave 



0.145 water, 

 0.645 carbonic acid ; 

 corresponding to 



Carbon = 50.66 

 Hydrogen = 4.00 per cent. 



The difference is necessarily chlorine. 



These crystals, added to a new quantity, were recrystallized from ether, and 

 then again analyzed. 



B. 0.549 material gave 



0.215 water, 

 0.976 carbonic acid ; 

 corresponding to 



Carbon =49.15 



, 100. 

 Hydrogen =: 4.34 



The body consisting of Cg H3 cl gives 



Carbon =48.87 1 



Hydrogen = 3.99 [ 100, 



Chlorine =47.14 J. 

 with which the analyses agree. 



The solid substance is thus formed from mesitylene, an atom of hydrogen 

 being replaced by one of chlorine ; the hypothetic radical Cg H3 remaining 

 constant. 



XI. OF IODIDE OF PTELEYL. 



I have given this name to a substance, of which I have never been able to 

 obtain a quantity sufficient for analysis ; but from the circumstances under which 

 it is formed, and the properties I have found it to possess, I believe such to be 

 its nature. 



Mesitylene dissolves iodine in large quantity, forming a deep-red solution ; 



