102 Dr. Kane on the Combinations derived from Pyroacetic Spirit. 



To determine the composition of mesitylene, the following analyses were 

 made : 



I. 0.220 gramme material gave 



0.206 water. 

 0.717 carbonic acid. 



II. 0.329 material gave 



0.315 water. 

 1.054 carbonic acid. 



III. 0.248 material gave 



0.236 water. 

 0.788 carbonic acid. 



These analyses give 



I. 

 Carbon =90.14 

 Hydrogen = 10.39 



100.53 98.88 100.63 



The results of these analyses leave no doubt as to the real composition of the 

 substance. 



C6 = 36.78 gives 90.19 

 H,= 4.00 9.81 



40.78 100.00 



This body therefore is formed by the abstraction of two atoms of water from 

 the mesitic alcohol, CgHgOj — 13.^o^-=Cq^^. It occupies in the mesitic series the 

 same position as the olefiant gas in the series of ordinary alcohol. 



II. OF MESITIC ETHER. OXIDE OF MESITYL. 



In the reaction of sulphuric acid on the mesitic alcohol this substance is in 

 the first instance produced, but on the heat being raised, the prevailing influence 



