CH. V] 



MACERATED WOOD. 



79 



water transport) in the tracheids are like those of the 

 vessels, namely, bordered. 



FIG. 37. 



MACERATED OAK-WOOD. 



/, fibres. tr, tracheids. sp, spiral vessel. 



d.v, dotted vessel. p, medullary ray. 



The wood-fibres, as shown in fig. 37, are thick walled 

 elongated elements with narrow cavities. 



