link because 



distances 1 



e not presenl 



owing to the peculiar quality residue in the' micella- of the 

 lignified cellulose, which enables the water molecules to move 



with nival rapidity, when the equilbrium i- one*' (listurl)ed by 

 transpiration above. This pen;: lost when 



particle- to move with such rapidity. One of the favorite 

 experiments given in favor of this theory is that of Th. 

 Hartigwith the stick, which being held upright and a drop 

 of water placed on its upper surface, it at once disappears and 



succeeds only when the wood of the stick is saturated with 

 water. Schwendener's explanation of this phenone 

 tremely simple and takes away all evidence of the rapidly 

 moving particles or molecules of water in the wall. In this 

 saturated condition, there would be continuous water columns 

 inside the tracheids, the cut surface at the top transpires 

 enough to form the concave meniscuses for all these columns, 

 the added drop is sufficient to destroy these meniscuses, the 

 water columns sink until the drop is drawn in and new menis- 



