82 L. Richardson—Stratigraphical Position of Prosopon. 
VI.—On ter Srrarigraraicat Postrion or THE BEDS FROM WHICH 
Prosovon Ricuarpsonr, H. Woopwarp, Was OBTAINED. 
By L. Ricuarpson. 
4 S some months will elapse before the results of my investigations 
f\ of the Inferior Oolite and contiguous deposits of the district 
between Doulting, near Shepton Mallet, and Stroud, are published, in 
order to show from which beds the Prosopon described by Dr. Henry 
Woodward, F.R.S., was probably obtained, it appears desirable to give 
an outline of certain of these results. 
In the Doulting—Bath district the greatest number of subdivisions 
of the Inferior Oolite that can be recognised are six. They are, in 
ascending order, the Upper Zrzgonia-Grit, Dundry Freestone, Upper 
Coral-Bed (or ‘‘ Coralline Beds’’), Doulting Stone, Anabacia-Lime- 
stones, and certain rubbly beds, which, for want of a better term, may 
be called the ‘‘ Rubbly Beds.’’ In the whole of this Doulting—Bath 
district there is no Inferior-Oolite deposit of pre-garantiane date. 
The deposit of garantiane hemera, the Upper Zrigonia-Grit, when 
traced from the neighbourhood of Bath towards the Mendip Hills is 
seen to transgress the outcrop edges of successively older beds. In 
a shaft on Timsbury Sleight, Timsbury, near Radstock, and also in 
the roadside section at. Midford, it is seen to rest, non-sequentially 
of course, upon the Midford Sands. In the section by the railway 
bridge at Wellow it rests upon the Cephalopod-Bed of these parts, 
which, instead of coming above the ‘‘ Sands,” as does the Cephalopod- 
Bed of the Cotteswold Hills around Wotton-under-Edge, comes below. 
In the railway-cutting at Mells-Road Station the meagre representative 
of the Upper Zrigonia-Grit reposes directly upon Liassic clays; but 
in the Vallis, near Frome, the ‘“‘ grit’? has been overstepped by the 
Doulting Stone, which may be seen near Hapsford Mills, Eln, resting 
on a very much bored, planed, and oyster-covered surface of the 
Rheetic White Lias, and in the same neighbourhood upon an equally 
bored, planed, and oyster-covered surface of the Carboniferous 
Limestone. 
Above the Upper Trigonia-Grit in the neighbourhood of Timsbury 
Sleight is a representative of the Dundry Freestone, and above that 
deposit the Upper Coral-Bed. The geographical extent of the 
freestone in this area is very restricted. It is represented in a section 
at English Combe, near Bath, but it is absent from the section at 
Midford, where the Upper Coral-Bed rests non-sequentially upon the 
Upper Zrigonza-Grit. The Upper Coral-Bed, on the other hand, has 
a very considerable geographical extent. It is intermittent, it is true, 
but by means of its corals, brachiopods, and micro-organisms, it can 
be demonstrated that the well-known coral-beds of Midford, Rodborough 
Hill, and Worgen’s Quarry, near Stroud, and the ‘‘ Coralline Beds” of 
Dundry, are widely-separated patches of a contemporaneous deposit. 
The remaining intervening deposits between the Upper Zrigonia- 
Grit and the Fullers’ Earth, namely, the Doulting Stone, Anabacia- 
Limestones, and Rubbly Beds, may collectively be called the ‘‘ Doulting 
Beds.” As far as I can see at present the beds known as the ‘‘ Clypeus- 
Grit”? in the Cheltenham District are equivalent to these Doulting 
