65, 



of the preparations, this being done in absolute alcohol 

 entirely, Throughout this proceedure the leaves reta,ined their 

 original shapes as cut in the field and the sections cut from 

 them shov/ed the difference between the internal structure of 

 the curled leaf and that of the expanded one. 



Results 



The results of the first experiment show that normal 

 unsealed leaves lost on an average 68^12% of their weight 

 during the first twenty four hours; during the second day the 

 loss amounted to 8,75^ of their weight;v/hile for the rest 

 of the T/eek these leaves lost no more in weight, The total 

 average loss from the uncoated leaves for the entire week 

 amounted to 76,88^ of their original weight, The one externally 

 evident result of this enormous loss was the curling of the 

 leaf , The leaves of which the lower surfaces were sealed showed 

 aji average loss during the first day of 11,16^, on the second 

 5.12^,on the third day 8,72^,on the fourth 0,32^ and on the 

 fifth l,07^,Ko more loss in weight took place during the rest 

 of the v;^eek, Those leaves of which the upper surfaces were 

 sealed lost during the first day an average of 42,20^, during 

 the second 3,67^ and during the third day 7,4^,No further loss 

 was observed for the rest of the week. The leaves with both 

 surfaces sealed lost the least, the first day's loss being 

 6,04^,during the second day the loss was 1,33^ and on the fourth 

 day a loss of 4., 82% was observed,These leaves showed no further 

 loss for rest of the v/eek,Theoretically these leaves should 



