Notes on the Geology of South Ferriby. 59 
The same author points out that the fossils in these pits are 
those which most commonly occur at the same horizon in the south 
of England. At the base of the chalk with flints, he found 
Rhynchonella cuvieri, Echinoconus subvotundus and E. globulus (?) 
Inocevamus mytiloides was very abundant at the top of the 
yellowish chalk, and Rhynchonella cuvieri occurred. Belemnitella 
plena was found in the blue-grey marl, and Rhynchonella plicatilis, 
Tevebvatula biplicata, and Ostrea vesicularis in the rubbly band 
below. Holaster subglobosus and Discoidea cylindrica were not un- 
common in the lowest bed. 
Mr. Hill estimates the thickness of the Lower Chalk in 
Lincolnshire as 75 feet. 
In the Geological Survey Memoir dealing with North 
Lincolnshire* the following details are given of the Ferriby 
quarry, i.e., the one nearest the Hall :— 
( Hard white chalk with flints (inaccessible) 
about 40 
wee creamy coloured chalk 2 
: ale and shaly chalk 5 
Middle Chalk. 4 Yr yellowish-white, gritty chalk, full ~ 
| of Inocevamus, in regular massive beds 12 
to 18 inches thick, with partings of 
shale . 16 
(Soft grey shaly marl, darker below, with 
a thin course of shaly chalk in the middle 2 
| Greyish white thin bedded and shaly 
Lower Chalk. 4 chalk 18 
| Course of hard, compact, whiter chalk 
;Grey nodular chalk with irregular 
{seams of shale 
In this pit the Middle Chalk is estimated at 533 feet, and the 
Lower Chalk 28 feet, or a total thickness of exposed chalk of 815 
p fect. 
The section just quoted was measured in 1883, since which 
date the face of the quarry has altered but little. 
____In 1902 when Messrs. Rowe and Sherborn were examining the 
Yorkshire Chalk, I had the pleasure of joining them in a ramble 
across the Humber. Their observations are printed in the Pro- 
_ ceedings of the Geologists’ Association.{| In the Ferriby pit is 
, ee peter of Parts of North Lincolnshire and South Yorkshire, 
‘ , p- 117. : 
’ TVol. 18, part 4, 1904, pp. 202-203. 
