6 
like the nautilus, were then abundant in the waters, and each 
of the stages or zones of life into which the Lias is now divided 
possesses specific forms that characterize it and are found in no 
other. The top of the Upper Lias—on which they were then 
standing—was covered by a bed of sand, which in certain 
localities—as at Frocester Hill—is overlaid by a remarkable 
bed, full of Ammonites, Nautili, Belemnites, and other shells. 
This is the true ‘Cephalopoda bed’ of this district, and this 
name should be restricted to it, as we have Ammonite beds in | 
other parts of the section, but only one true ‘Cephalopoda bed,’ 
as originally defined. The next bed above this is the lower 
portion of the Inferior Oolite, known as the ‘ Pea Grit,’ a coarse 
rubbly Oolite, full of flattened concretions cemented together 
by a calcareous matrix, forming, when it weathers, the remark- 
able rock called ‘ Pea Grit.’ ” 
The party then moved onward to a part of the escarpment 
where the upper “‘ Pea Grit” beds are well developed. At this 
point our colleague, Major Barnarp, invited the party to 
luncheon at his residence at Bartlow, where the naturalists 
found provided for their refreshment an ample supply of 
“creature comforts,” to which they did full justice. 
After luncheon, at the Doctor’s summons the march was 
resumed, and as the party moved along the western escarpment 
he pointed out all the remarkable features of the section. The 
“ Roe-stone” bed, with its numerous beautiful small shells, 
very much like those on Minchinhampton Common; the rich 
bed of brachiopods that lies under the Freestones; the variety 
of fossils in the thick-bedded Oolite Limestones, indicating: 
changes of condition in their formation ;—all engaged the 
attention of the party at each successive point where good 
examples were exposed. 
A sharp pull up the long slope brought the party to the 
summit. By the way the position of the “Oolite Marl” was 
pointed out; and a walk over the Upper Freestone brought 
them to the ground which had once been occupied by the 
“Upper Ragstones,” which had been quarried out and removed 
for road material for many a long year. From hence the party 
