Dr. Kane on Combinations derived from Pyroacetic Spirit. 109 



70.02 sulphate of lime. 



196.18 100.00 



This is evidently the true formula. 



Persulpho-mesitylate of baryta crystallizes in small pearly plates ; when heated 

 it becomes brown, chars, and sulphate of baryta remains ; quite neutral. 

 0.430 salt gave 0.337 of sulphate of baryta, or 78.4 per cent. 



The formula 2SO3-I- CgH50-|-2Bao-|-Ho gives 



P. ^ 



80.0 



20.0 



292.5 100.0 



It was not further analyzed. 



The sulpho-mesitylate of lead appeared to be very deliquescent and un- 

 crystallizable ; it was not analyzed. 



VII. SULPHO-MESITYLATE OF LIME. 



This salt is generally formed when the quantity of oil of vitriol, added to the 

 mesitic alcohol, is smaller than to produce the former class of salts ; as, when two 

 volumes of the alcohol are mixed with one of vitriol. The solution, when very 

 much concentrated, forms, by cooling, a mass of small crystals not differing much 

 in appearance from the persulpho-mesitylate, — from which, however, the result 

 of analysis at once separates it. 



A. 0.625 of this salt in crystals was heated cautiously in a platinum crucible, 

 until all emission of watery vapour had ceased ; the salt remained quite white. 

 The residual mass weighed 0.580, or had given 7-2 per cent, of water. These 

 0.580 were dissolved in water, and decomposed by oxalate of ammonia. The 



..'^- 



