DORSET-SOMERSET DISTRICT. 37 
the fossils marked “ Burton Bradstock ” and “ Bridport.” The majority, however, 
undoubtedly come from the horizon which I have distinguished as P,. 
Bripport.—The town itself is on the Middle Lias, but within a moderate dis- 
tance are some important exposures of the Inferior Oolite. Burton Bradstock 
bears 2} miles S.E. The cliff between Bredymouth and Bridport Harbour 2 miles 
S. by E.; Vitney Cross Quarries 3 miles E.; Upper Loders Quarry 3} miles 
H.N.E.; quarry at Poorstock Station 33 miles N.N.E.; Outlier at Symondsbury 14 
miles W. by N.; Outlier at Chideock 2 miles W. by N. Some of these may have 
had more importance formerly than at present, but two of them have yielded many 
interesting Gasteropoda quite lately, viz. Vitney Cross and Upper Loders. 
Virney Cross (see Profile No. 2, p. 38).—There are two quarries here, distin- 
guished as the Limekiln Quarry and Knights Quarry. Both afford good hunting 
ground for fossils, but in the Limekiln Quarry the section is more complete. 
This quarry is extremely interesting, as it serves for comparison with the 
development of the Inferior Oolite in Burton Bradstock Cliff, a distance of three 
miles. We find that the physical conditions are mainly the same; the volume of 
the limestones has not at all increased, the Inferior Oolite is still ‘‘ in a nutshell,” 
and the Parkinsoni-zone maintains its preponderance in every way. 
The lowest bed visible is somewhere about the opalinus-zone, but no paleon- 
tological traces of that horizon are forthcoming. The block with the line of 
Ammonites resembling Am. Murchisone is a hard blue stone with much pyrites, 
and is far from being a pure limestone ; there is a line of a large Astarte along with 
the Ammonites. The irony nodules serve as an excellent physical feature to guide 
us on this horizon. The bed above the irony nodules contains numerous Belem- 
nites; it is in many places a hard, calcitic, ironshot stone like the ordinary 
Dundry matrix. In position it may represent the concavus- or Sowerbyi-beds, and 
probably forms the top of the Lower Division in this quarry, most probably in 
contact, or nearly so, with the base of P). 
The lower half of P,, which we may distinguish as the Astarte-bed, constitutes 
the base of the upper portion of the quarry ; it is well developed, and contains, both 
here and in the adjoiing quarry, a fine suite of Gasteropoda, tallying extremely 
well with species from the same bed in Burton Bradstock Cliff. Fine specimens of 
Spinigera recurva, and many of the characteristic univalyes of Burton Bradstock 
and the neighbourhood of Bridport, may be found here, but the matrix is rather 
harsher to work. In Knight’s Quarry large specimens of Am. Parkinsoni, and a 
small species of Stephanoceras are abundant; Ancyloceras also occurs. The lower 
half of P, is separated from the upper half by about six inches of limestone without 
many fossils; it is rather thinly stocked, but contains a considerable number of 
Ter. spheroidalis, or what passes for that species. 
One of the more remarkable features of the quarry is the great development of 
