2 
strata underlying the Shellbed pass downwards into fine- 
grained soft rocks characterized by the Foraminifer 
Planorhulina larvata. This position is correctly indicated 
in the Diagram at p. 30 of The Proceedings of The Society 
illustrating my Paper on Recent Geological Discoveries 
(Yol. XII., 1912). These strata are there indicated by 
the letter h 3 and h 2 (Page 9 of separate copies ) 
Interstratified with the mudbeds are strata of a more 
permeable quality, consisting of fine sandstones, and these ** 
pass in places into gravel beds sometimes indurated and 
these sandy and gravel beds allow of the percolation and 
storage of water whence the springs which are common in 
this country. The lower portion of the Caroni Series 
especially contains gravel beds which seem to overlie the 
cretaceous rocks. In fact the gravelly and sandy beds of 
the Tertiaries are here chiefly derived from the cre- 
taceous series. I did not see the lower miooene beds (the 
Taman#, Series) exposed anywhere in this locality, and 
it is possible that they may not have been developed here, 
or they may be in part or wholly represented by the 
strata underlying the Shellbed. 
On one £>oint it seems necessary to give a caution. 
That is, that the diagrams attached to my papers are not 
intended in any way as finished plans or sections. Thus [ 
the diagram of the Orbitoides Bed ( Proceedings r, p 2 04) 
is intended only to show approximately the position of 
that bed ; it is not drawn to scale nor is it intended 
to show the dip or the relations of the other beds. The f 
diagram is sufficient for its purpose. The faults shown 
in the diagram of which it is a modified copy (Jourm 
Geol. Soc. 1892, Page 522) are not indicated. Again the 
diagram at Page 9 of my Paper on Recent Geological 1 
Discoveries, page 30 of Proceedings ) is purely diagram- 
matic. It shows correctly the relations of the strata so 
far as yet ascertained- But these diagrams are merely 
generalized sections, and for convenience the height is y 
r) 
