COTTESWOLD DISTRICT. 59 
of Terebratula near to globata, and especially by Nerinea Guisei, which has never 
failed us since we entered No. 2 District. As we shall see presently, this certainly 
represents a portion of the Olypeus-grit. The upper shelly series, measured in the 
Profile as six feet, is in fact an accidental and extremely variable development, 
since towards the south end of the quarry the shells of this horizon have almost 
disappeared, whilst the highest beds of all represent a phase which is not uncommon 
in the Cotteswolds, but which would seem to possess but little paleontological 
interest. Altogether the Upper Ragstones are very fully developed in Horton 
Hill Quarry. 
Travelling northwards we are able to obtain a nearly complete section of the 
entire Inferior Oolite in the ridge which forms a continuation of Symonds Hall 
Hill on the other side of Wootton-under-Edge. The Inferior Oolite limestones 
are now seen to attain a considerable thickness, and the Gloucestershire Cephalo- 
poda-bed, or zone of Aim. radians, is exceedingly well developed. Above it we 
perceive between thirty and forty feet of freestones (fine-grained oolite and 
broken-shell rock) ; towards the middle of this there is a slight unconformity in 
connection with a bed of Nerinwa. The top of the Freestone series is bored and 
hardened indicating unconformity to a marked extent. The whole of this 
Freestone series belongs in all probability to the Murchisone-zone. Above this we 
perceive a repetition of the Horton Hill sequence, viz. that a representative of the 
Upper Trigonia-grit rests directly on the freestones without any intervening 
Gryphite-grit. At this place, too, Nerinwa Guisei may be found in its usual posi- 
tion in the Clypeus-grit. | 
Namsworta Hi1.—The town is about six miles east-north-east of Wootton- 
under-Hdge, and nearly twelve miles north-north-east of the exposure at Horton 
Hill previously described. Many of Lycett’s specimens, now preserved in the 
Jermyn Street Museum, are labelled “I. O., Nailsworth Hill,” though unfor- 
tunately the horizon is never indicated. As I have myself obtained a considerable 
number of Nerinzas from this locality, I append a complete profile of the Inferior 
Oolite of this district, mainly based upon the exposures on Scar Hill. 
The lowest beds in this section partake of the Wootton and Frocester type. 
At the latter place Oppel’ runs the Lias boundary (Lias-Grenze) between the 
radians- or jurensis-zone, and the opalinus- or torulosus-zone. A few Gasteropoda 
are obtained from this opalinus-zone in different parts of the Cotteswolds, but 
usually their condition is not favorable to accurate determination. 
Considerable attention has been drawn to the small Gasteropods of the 
Lower Limestone, most of which, in addition to being extremely minute, are 
sadly rolled and defaced. Cerithiwm is the prevailing form. Mr. Witchell recently 
exhibited some of these at the Geological Society in illustration of a paper on the 
1 « Juraformation,’ p. 296. 
