94 



Scientific Proceedings, Royal Dublin Society. 



There is very little indication of any inhibition in the sucrose day sap, 

 whereas there is a slight initial fall in the depression in that of the hexose 



iO-447 

 10 20 30 40 50 eO 70 80 90 



TIME IN HOURS 



Fig. 5. 



sample, due possibly to a condensation of the hexoses. The subsequent 

 increase in the depressions of both samples, we are justified in assuming, 



10 20 30 40 50 60 



TIME IN HOURS 



Fig. 6. 



is due to the inversion of sucrose; that in the hexose sample is due to the 

 inversion of the sucrose of the sap. 



In both the night samples a condensation or destruction of hexoses is 



