244 . 
ORGANIC REMAINS 
name of Pecopteris reticulata ; but M. Adolphe 
Brougniart, who has carefully examined its struc- 
ture, refers it to his genus Lonchopteris, with the 
above specific designation. One of the most 
curious and beautiful vegetable fossils in my col- 
lection is a leaf of this fern in hard grit, in which 
the parts of fructification are displayed in the most 
])erfect manner. 
Lycopodites f — Horsted Sand, near Chiddingly. 
Several delicate fossil plants liave been collected in 
a marly sand, in a low bank on tlie road-side leading 
from the Dicker to Chiddingly : they resemble the 
vegetable remains referred by M. Brongniart to 
this genus, but they are so imperfect that their 
true characters have not been ascertained. In the 
same sand-bank, the Lonchopteri.s Mantelli is also 
met with ; and one of the layers of sand is full of 
innumerable traces of a species of Sphenopteris, 
too obscure to make out its characters, but the 
stems and branches of which are disposed as if the 
plants were standing erect on the spot where they 
originally grew, and a stratum of sand had been 
gently deposited upon them. In a layer of reddish 
sandstone at Stammerham, I observed a similar 
appearance. 
Calamites ? — In the soft sandstone of Hastiiiirs, 
we perceived the remains of stems of plants, flat 
from compression, and in such a state of decay as 
to admit of no specification, yet they aftbrded cer- 
tain evidence of the former existence of laro;e 
arundinaceous plants in the Wealden. Traces of 
Cycadites and Sphenopterites are disseminated 
throughout these arenaceous strata. 
