I 1 1. ATK XXI. 



1 \>doearpoxylon ledfonlense, sp. nov. Sections of wood. 

 Lower Greensand ; Woburn, Bedfordshire. 



Fig. 1. Transverse section, showing the regular wood-texture 

 and annual rings. No. V. 1319 la (p. 223). 



Fig. 2. Radial longitudinal section of the same, showing the 

 numerous low medullary rays. No. V. 13191 d 

 (p. 225). 



Fig. 3. Small part of the radial section, enlarged to show the 

 pitting of the radial walls of the tracheids. At p. a 

 tracheid can be seen with two short chains of adjacent 

 pits, the tracheid to the left of it shows a longer 

 chain of pits. ,\o. V. KJH)U/ip. L>L>>). 



