- 3 - 



was absent only from that part of the wood just below the wound. 

 In a transverse section, marked (b), it was not only absent 

 below the tapping spot, but also below a piece of the remaining 



Diagram II. 



.bark, and finally at (c) in an unbroken ring of wood, 2 cm wide. 

 The inner parts of the wood, however, still contained abundant 

 starch, penetrating into the pith. Nor was it possible, by a treat- 



