F. M JAEOER- Contribation to the knowledge of the iaomorphouB sobstitotion of the elementn Fluorine, 

 Chlorioe, Bromine and Iodine in organic molecules. 



p-Chloroben7.oic Methyl ester. 

 From methyl alcohol, at a lower temperature 



p-Chlorobenzoic Methyl ester. 

 From methyl alcohol, at a higher temperaturt 



p-ChlorobeiiZ(iic Melhyl ester. 

 From ether, at a Irnver temperaturt 



p-Bromobenzoic Methyl i 

 From methyl alcohol 

 Fig. 8. 



p-Bromobenzoic Methyl 



Proceedings Royal Acad. Amsterdum Vol, Vlll. 



