OF THE WEALDEN. 
245 
Equisetum L^ellii. — In grey and blue grit and 
limestone, Pounceford. 
The occurrence of the Equiseta in the AVealden 
strata, is very local ; but where these plants are found, 
they prevail in great numbers : in no locality are 
they more abundant than in the quarries at Pounce- 
ford, and the surrounding country. This species, 
which I have named in honour of Charles Lyell, 
Esq., Professor of Geology in King’s College, 
London, &c., is very distinct from any previously 
noticed ; when perfect, it probably attained a 
heiixht of two feet or more : the termination of 
the cryptogamous head is seen in fig. 3 : and, in 
fig. 1. and 2., traces of the striated sheath are 
dis})layed. 
Carpolithus ManteUi. — Cxeol. Trans, vol i. new 
series, p. t23. “ This fossil seed-vessel is occasion- 
ally found in the grit and sandstone of Tilgate 
R 3 
