400 
DESCRIPTION 
OF 
PLATE I. 
Fig. 1. The internal axis of the stem of Clathraria Lyelliiy 
from Tilgate Forest ; the original is three feet in 
length ; described p. 233. 
2. The external surface of the stem of Clathraria 
Lyellii^ showing the cicatrices formed by the 
bases of the leaves : the original is 1 5 inches 
long ; described p. 234. 
3. Magnified view of a portion of the frond of a 
species of Lonchoyteris ; p. 243. 
4. The surface of JCndogenitcs erosa^ slightly mag- 
nified ; p. 236. 
5. Magnified view of a portion of a polished trans- 
verse section of Efidogenites erosa; p. 236. 
6. Portion of the internal part of the stem of Clath- 
raria Lyellii: the tranverse direction assumed 
by the fibres on the upper part of the specimen 
indicates the situation of a floral axis ; p. 235. 
7. A small specimen of Endogcnites erosa; p. 236. 
