246 DESCRIPTIVE CATALOGUE 



V. 6450. Small fragment, 3'5 cm. long, of secondary wood 

 imperfectly petrified and partly embedded in the coarse 

 sandy matrix. Kentish Rag; Maidstone. 



Transferred from the Botanical Drpt. 



V. 8314. A small fragment, 4x3-5 cm., of secondary teredo- 

 bored wood, forming a structureless film on the coarse 

 sandy matrix. Lower Greensand (?) ; Folkestone. 



Caleb Evans Coll. 



CONIFEROUS ROOTS (?). 



Among the fossils which it is impossible to place with 

 certainty, and yet which must be mentioned, are specimens like 

 that shown in text-fig. 71. 



Poorly preserved in the coarse sandy matrix of the Kentish 

 Rag, little or no plant-tissue remains in them. All that is to 

 be seen, as a rule, is a cast or groove deeply iron-stained by 

 the decomposed plant-debris. Sometimes a few fragmentary 

 tracheids can be detected in a microscopic preparation of the 

 brown powdery surface. 



The specimens are of considerable si/e, slabs 15 cm. or more 

 across expose a number of laterals varying from 3 mm. to 

 10 mm. in diameter, which branch irregularly and interlace like 

 the roots of an existing Coniferous tree. 



