273 



with tlie action of oxygen on pliospliorus, in which ozone and a 

 pliosphoro-oxjgen coniponnd was formed. 



This, statement shows ver_v clearij the insn[)erable diflicult^' with 

 which one is confronted, when with phenomena which so clearl}' 

 point to the complex character of the phases, one jet continues to 

 occupy the old standpoint. 



I will not treat the phenomena found in the examination of SO, 

 more at length here, but leave the discussion of them to the 

 following communication. 



Amsterdam, March 1923. 



Laboratory of General and Inoryanic 

 Chemistry of the University. 



