164 DESCRIPTIVE CATALOGUE 



Taxodineae. Owing to the imperfect preservation of the speci- 

 men, it is impossible to discuss any generic relationship for the 

 plant. 



1764. Text-fig. 46. This is the original specimen figured l>y 

 Mackie in 1862, Geol. Mag. pi. xxii, and ngain by 

 Seward in 1896, Ann. Bot. pi. xiv, fig. 3. It is a cast 

 in a coarse firm matrix, and shows a short length 

 of the corrugated trunk, 11 cm. long by about 

 9 x 10*5 cm. in oval diameter. The upper end of the 

 specimen appears to bifurcate and merges with the 

 matrix. The corrugated surface of the specimen is 

 almost clean ; a few greyish scraps of mineralised 

 matter, however, adhere to it, and in these traces of 

 tracheids can be detected. Internally, no remains 

 of the wood are to be seen. Kentish Hag ; Iguanodon 

 Quarry, Maidstone. 



Found (in<l ^resented by W. II. Beuste<1, AV</., Is: ;<). 



8357, V. 9572, & 1765. Text-fig. 47. That all these pieces 

 belong to the same trunk seems likely. That V. 9572 

 and 1765 are one specimen is certain. Placed to- 

 gether the whole forms a mass about 70 cm. long and 

 13-15 x 9 or 10 cm. in diameter. The part labelled 

 8357 is partly embedded in the hard matrix of the 

 K< ntish Rag, and the other end is almost free from 

 matrix. The trunk is somewhat flattened and the 

 larger end is hollow, the cavity is lined by a wood- 

 like mineral deposit, but also shows a number of 

 fragments of pulverising wood from which the tracheids 

 can be mounted (see toxt-fig. 47). One face of 

 V. 9572 has been cut across and polished, and it 

 shows only the decaying scraps of wood on one side 

 aud the mineral matrix. This specimen shows two 

 zones of corrugated surface separated by about 1 cm. 

 of matrix, which strongly suggest that the apparently 

 external corrugated surface is only a decorticated view 

 of the wood. This interpretation is further confirmed 

 by the Maidstone specimen. 1765 (PI. XIII, fig. 1), 

 which has been cut from V. 9572, shows the inner 

 imperfectly preserved axis of wood sloping up to break 



