965 



io if 



ir IC "'' 



Percentage of unsplit pinacone 

 Fi-. 1. 

 Decomposition of the pinacones in U.Ül n NaOCaHa. 



too f" '" 



Percentage of unsplit pinacone. 



Fig- '■^■ 

 Decomposition of tlic pinacones in O.üOl ?i NaüCaHj. 



