181 
generally. The position of the Harford Sands is certainly 
doubtful as they are unfossiliferous, and the same remark 
partly applies to the Upper Freestone, but considering the 
occurrence of Terebratula fimbria right at the top of the Upper 
Freestone, and therefore the evident relationship of this 
deposit to the Oolite Marl, I would rather place these together 
in the zone of Murchisone than, as Dr Wright proposed, place 
the Upper Freestone in one zone and the Oolite Marl in 
another. 
I have mentioned the hiatus which occurs in the Stroud 
area between the top of the Upper Freestone and the Gryphza 
Grit above it, which is indicated by the Bored bed on the top 
of the Upper Freestone. It seems to me that there can be 
little doubt that the beds G. and H. of our sections are the 
beds which are missing in the Stroud area. But it becomes 
a more difficult question, however, to say what beds are to be 
considered as missing between the top of the Notgrove Free- 
stone and the Upper Trigonia Grit. The Bored bed that we 
find on the top of the Notgrove Freestone evidently shews us 
that there was a cessation of deposit in the district between 
these beds. But if we turn to the Stroud area we find that 
the Upper Trigonia Grit rests directly upon the Gryphea Grit, 
without even any representative of the Notgrove Freestone being 
present. My theory however is that this cessation of deposit 
took place while the Humphriesianwm and Sauzei zones were 
being deposited in the neighbourhood of Sherborne, in Dorset, 
and some other places on the continent. 
I cannot do better than place here some remarks made by 
Dr Waagen* on the deposits in the neighbourhood of Chelten- 
ham. On page 577 (71) he says—‘‘ Pea grit and Freestone 
appear with tolerable certainty to belong to the zone of Am. 
Murchisone. To what place one should assign the Oolite Marl 
is doubtful, and the location of the Upper Freestone is also 
uncertain; but that the Lower Trigonia Grit represents the 
zone of Am. Sowerbyi is evident from the list of fossils from 
that deposit here given.” Dr Waagen then quotes a long list 
© Ueber die Zone des Ammonites Sowerbyi, Miinchen, 1867. 
K 2 
