PLATE 8, 9. 
Fig. 1. A specimen of the top, or upper part of the 
culm. Gritstone, a. part of the stone remaining in which 
it was lodged. 
FIG. 2 , 3. 
PHYTOLITHUS (corticatus) Radicis? teretis simplicis 
transversim rugatae, cortice crassa ®qua obductae. 
S. t. 
A fossil vegetable. The original a root? consisting of an 
inner part, which is columnar, simple> and transversely 
wrinkled, and an outward bark or covering, very thick and 
even, or not wrinkled. The inner wrinkled part frequently 
found divested of its exterior covering. 
Common in gritstone with the foregoing. 
Fig. 2, A specimen without the coat or bark. a. a. a 
part of the gritstone which surrounded it. 
3. With the bark remaining on one side. a. the inner 
Wrinkled part. b. b. the outward coat. c. c. c. part of the 
tiaatrix in which the specimen v^^as found. 
