216 
WISBOROUGH GREEN. 
the strata rise in gentle undulations immediately 
to the east of Kirdford, in the parish of Wis- 
borough Green, where at Headfold Wood Common, 
near Loxwood, their outline makes an angle corre- 
sponding to that formed by the Weald clay and su- 
perior strata.* These beds, at their first emergence, 
consist chiefly of clay, but enclose small slabs of a 
slightly calcareous sandstone ; and, beneath these, 
large tabular masses of a calcareous gTit, which is 
very similar to certain beds of the Stammerham and 
Slinfold quarries ; unlike, however, the latter, the 
calcareous grit of Wisborough Green is based upon 
a deep mass of red ferruginous marl, and is only 
found in detached portions. The strata are arranged 
in the following manner : — 
1. Calcareous sandstone (containing about 30 per 
cent, of carbonate of lime), in clay, with casts of 
viviparae, &c. 
2. Tabular calcareous grit, witli bones of large 
saurian animals. 
3. Deep red clay, with argillaceous ironstone. 
4. Blue clay, with selenites, the lowermost bed. 
In these strata, Mr. Murchison discovered ver- 
tebrae, and a femur of the Iguanodon of enormous 
magnitude (3 feet 7 inches long, and 34 inches 
in circumference at the largest extremity), and 
portions of other bones of some of the saurian 
animals of Tilgate Forest. The greater part of 
* The western extremity of the Hastings sands was first noticed by 
Mr. Murchison, the excellent President of the Geological Society, and 
described by him in a highly interesting memoir on the Geology of tlie 
north-western extremity of Sussex, and the adjoining parts of Hants 
and Surrey, published in the Geological Transactions, vol. ii. part i. 
New Series. 
