65 



exhibit lowering of the melting point when mixed with the dinitro 

 compound obtained through the same treatment from p. cresj'l methyl- 

 ether. The liquid obtained is therefore undoubtedly p. cresjl methyl- 

 ether. How this substance is formed, has not been explained as yet. 



The polymer melting at 166°, dissolved in chloroform, gives with 

 bromine a bromide crystallising out from petroleum ether in fine 

 needles, melting at 139° while assuming a black colour. About the 

 experiments which have been made to determine the structure of 

 the polymers, we may communicate what follows. 



The product melting at 98° was oxidised with a solution of 

 potassium permanganate in acetone. At this oxidation there is formed 

 besides anisic acid, an acid which on recrystallisation separates from 

 toluol into hard- massive crystals. Melting point 113°. A micro- 

 elementary analysis gave C 69.42 and 69.34 7,. H 8.06 and 7.687„. 

 These results point to a substance of the composition C^jHuOa 

 (Theory C 69.22 \/„ H 7.74 7„). 



We found 207 for the molecular weight, by titration, assuming 

 the acid to be monobasic. Calculated for CuHj^Oj : 208. 



Continued oxidation, now with the mixture according to Kiliani, 

 caused a new acid melting at 138° to be formed from this acid 

 melting at 113°. We are still occupied with this research. 



Oxidation of the product melting at 166° yielded only anisic acid. 



Utrecht. Org. Chem. Labor, of the University. 



Proceedings Royal Acad. Amsterdam. Vol. XX. 



