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The beds below the Pea-grit are rather thicker than at 
Birdlip, but I think some better definition of the Pea-grit is 
required than now exists. Wherever Pea-grit occurs, however 
small the quantity may be, the beds are apt to be classed as 
belonging to that formation. 
Now, in the investigations I have made, I have been struck 
with its partial appearance, and even when well developed, it is 
often in pockets, or nests, as will be seen by the specimen in my 
hand. 
In the paper on the Birdlip Section in 1884, I mention having 
found Pea-grit in greater abundance in the parting of the beds, 
and confessed my inability to explain the reason. On reflection 
I would submit that it arises from a slight cessation of the 
current, which was not able then to reduce the rock from which 
it was derived, to a fine sediment, and that really the Pea-grit 
is the cause of the partings in the beds, and without it the 
rocks would now shew a homogeneous mass. I therefore think 
the term Pea-grit proper, should be mainly confined to beds like 
No. 8 in No. 3 section, or to where it is largely met with, and 
that when found, occurring sparseley, the term that Pea-grit is 
disseminated in the beds, would be a more accurate expression. 
Some years since in visiting Crickley with Sir W. V. Guise, the 
Rev. W. S. Symonds, and Professor Hughes, we examined the 
Pea-grit, and at the time I had in my pocket some Nummulites, 
which I had collected from the beds at Biarritz, and in compar- 
ing them with some of the flattened Pea-grit, we were unable 
to detect the difference between them, suggesting a common 
origin as to the cause of the form, although derived from a very 
different formation. 
I venture to give a description of the Pea-grit by the late 
Dr Wright, as it is expressed more clearly than it is in my power 
to do. 
He says, “It is composed of multitudes of flattened 
spheroidal masses about the size of a Pea, one fourth or one 
fifth of an inch in diameter. Most of the ovules consist of 
layers of carbonate of lime, aggregated round some organic or 
inorganic fragment, and the concentric structure is frequently 
