52 
THE GEOLOGIST. 
Cucidlcea glabra . . . 
Cyprina angulata . 
C. rostrata 
Cytherea (Venm) caperata 
Venus faha 
v. ovalis 
^xogyra %indulata . 
Gervillia anceps 
G. lanceolata .... 
G. solenoides 
Lima semisulcafa . 
Nuctt^a aiitiquata . 
JV. iviprrssa 
N. liiisata 
N. ohlusa 
Tellina incequalis . . . 
T. fPsammohiaJ striatula 
Thetis minor 
Trigonia dcedalcea . . . 
T. spectahilis 
T. caudata 
Littoriiia pungens . 
L. conica 
L. (Natiea) monilifera . 
L. (NaticaJ rotundata 
Phasianella formosa . . 
P. striata 
Turbo mu7iitus .... 
Nautilus elegans 
iJentalinm medium . 
Serpula filiformis . . . 
S. plexus . . . . . . 
Vermetus polygonalis . . 
Shaiikliii and Peasemarsh . Rare. 
Hythe and Sandgate. 
Atherlield. 
Atliei'field. 
Shanklin and Peasemarsh . Common. 
Peasemarsh Rare. 
Godalmhig Rare. 
Peasemarsh. 
Atherfield. 
Shankhn Common. 
Atherfield. 
Parham Park. 
Shankhn. 
Atherfield. 
Shankhn and Peasemarsh. 
Shanklin and Peasemarsh. 
Shanklin and Peasemarsh . Common. 
Parham Park. 
Atlierfield. 
Peasemai'sh. 
Peasemarsh and Shanklin . Common. 
Peasemarsli Rare. 
Common. 
Peasemarsh Rare. 
Peasemarsh Rare. 
Godalming. 
Peasemarsh. 
Shankhn. 
Hythe and Sandgate. 
From the above list, it is apparent that the Upper Greensand and Gaiilt 
fossils which occur at Black down are but few, and of small value when 
compared with those of the Lo\Ter Greensand. 
There are circumstances connected with the accumulation and deposition 
of the strata forming the Lower Greensand generally, which may also be 
taken into account in considering tkis question ; some of which I shall now 
proceed to notice. 
It has been shown by Dr. Fitton, that the Lower Greensand, wherever 
fully developed, is separable into three groups or series of strata ; each dif- 
fering somewhat from the others in mineral character, and each possessing 
a fauna more or less peculiar to itself Now, although the limits of each 
are not everywhere traceable, yet there is always a sufficient distinctness 
between them to warrant the belief that the same causes, whether of up- 
heaval or depression, acted throughout the entire British area then covered 
by the Greensand ocean. 
In the neighbourhood of Godalming this subdivision is, perhaps, more 
strongly marked than is usually the case. The lower Neocomian clays are 
here found, as elsewhere, resting conformably upon the Wealden. They 
are succeeded by a series of strata, composed, for the most part, of fine 
sand, mingled with more or less argillaceous matter, and including occa- 
sional bands of loose, concretionary sandstone ; this latter being, appa- 
rently, a local equivalent of the Eeutish rag of Maidstone. All these 
appear to have been deposited quietly and continuously, and form, includ- 
