1233 



But if we accept Biilmann's view, the occurrence of one and the 

 same doable acid and of three forms of allo-cinnamic acid is in- 

 telligible, since it would represent the most stable molecular arrange- 

 ment, and other arrangements would be very metastable or incapable 

 of existence. 



I hope shortly to publish some experiments designed to clear up 

 this contradiction. 



Buitenzorg, October II, J 917. 



