GEOLOGICAL SOCIETY OF LONDON. 
167 
ded in a pulpy substance like tlie fruit of the mulberry, which is 
a spurious compound berry, formed by a partial union of the en- 
larged and fleshy calices, each inclosing a dry membraneous 
pericarp. 
From the occurrence of the cones above described with the 
drifted remains of land and fresh water reptiles peculiar to the 
Wealden, Dr. Mantell infers that these fruits belong to the flora 
of the country of the country of the Iguanodon, 
" Notice on the fossilized remains of the soft parts of Mollusca/' 
by Dr. Mantell, F.R.S., &c. 
Substances presenting the same general appearance and com- 
position with coprolites, but destitute of the spiral structure, are 
thickly interspersed among the shells which abound in the rocks 
of firestone or upper greensand at Southborne in Sussex, some- 
times occurring in the state of casts of shells of the genera Cu- 
cull(Bay Venus, Trochus, Rostellaria, &c., from the soft bodies of 
which testacea Dr. Mantell considers them to have originated. 
They abound also in the layers of firestone which form the line 
of junction with the gault, and are not uncommon in the gault 
itself in several localities in Surrey and Kent. 
Dr. Fitton, in his memoir ' On the Strata below the Chalk' 
(Geol. Trans, vol. iv. part 2, p. 11), has given an account of si- 
milar concretions from Folkstone, where he observed them in 
some cases surrounding or incorporated with fossil remains, and 
filling the interior of Ammonites. Dr. Mantell has observed 
them also in the Shanklin sand in Western Sussex, in Surrey, 
near Ventnor in the Isle of Wight, and in Kent, and they espe- 
cially abound in the Iguanodon quarry of Kentish rag near 
Maidstone, belonging to Mr. W. H. Bensted. 
Mr. Bensted having long paid attention to this subject, more 
than two years ago submitted to Dr. Mantell specimens of fossil 
shells, the cavities of which were filled with a dark brown sub- 
stance in every respect identical with the nodular and irregular 
