TILGATE FOREST. 
211 
greater part being mere fragments, rounded by at- 
trition. This conglomerate, varying in texture 
and composition, occurs in greater or less force, in 
almost every quarry, in this part of the Tilgate 
strata. In some instances layers of a coarse friable 
grit, with calcareous concretions, occupy the upper 
part of the beds, as is the case in many places in 
the town of Cucldield, where it rises so near the 
surface as to be exposed in digging the foundations 
of houses, &c. In a quarry to the east of Cuckheld, 
this bed of coarse grit is seen in situ*, the section 
offering the following series : — 1. loam ; 2. friable 
sandstone ; 3. coarse grit; 4. sand and friable 
sandstone ; 5. calciferous grit, the lower part con- 
glomeritic ; 6. blue clay or marl. 
The sections above described present the most 
remarkable variations of the strata around Tilgate 
Forest ; and it is unnecessary to multiply examples. 
In all these localities, organic remains are more or 
less abundant. The bones of enormous saurians ; 
of turtles, fishes, and birds ; remains of large ar- 
borescent ferns ; shells of the genera cyrena, palu- 
dina, unio, &c. are found in all the beds, but more 
particularly in the calciferous sandstone, and the 
sand which covers it ; in the ferruginous sands 
above these, they are seldom, if ever, discovered ; 
and in the blue clay beneath, they are almost 
equally rare ; as the latter bed, however, con- 
tains nothing worthy the attention of the pro- 
prietors, it has been but little explored, and its 
contents are, consequently, but imperfectly known. 
* Vide the section in the map and sections, 
p 2 
