80 LOWER OOLITIC 11OCKI< OF ENGLAND : 
A somewhat siniihir series of beds, including higher strata 
together about 15 feet thick, were exposed in the road-cutting on 
the north side of Barrow Hill, between Milborne Week and the 
railway-station at Milborne Port. At the base there were beds 
of sandy limestone, and bluish-grey shelly limestone, overlaid by 
pale grey limestone and marl, and rubbly oolite. The pale lime- 
stone is probably the same as that above mentioned by Mr. 
Hudleston. Here small specimens of A. humphriesianus occur 
together with A. Parkinsoni ; while A. Blagdeni and A. Martinsi 
may also be found. In the rubbly oolites, Pholadomya Heraulti, 
and P. oblita are abundant ; and Rhynchonella spinosa, Terebra- 
tula sphfBroidalis, some Corals, and other fossils were also obtained. 
(See list, p. 81.) 
These sections are of interest in showing that the iron-shot beds 
of Sherborne and Oborne are represented to the north-east by 
strata of different lithological character. 
In a quarry on Gorton Down, between 3 and 4 miles north 
of Sherborne, the lower division of the Inferior Oolite with A. 
Murchisonce, has been observed. 
It is difficult to state the thickness of the Inferior Oolite near 
Sherborne, the quarries show but portions of the formation, and 
the beds are so variable in character : but I doubt the validity of 
adding together all the " hernerse " recognized by Mr. Buckman 
(see p. 76.), and thereby making a total thickness (nowhere 
present) of 130 feet of strata. 
Passing from west to east, the beds generally increase in thick- 
ness ; and at Castleton, Sherborne, a boring, recorded by J. C. 
Gapper in 1875, enables us to give the following approximate 
thicknesses of the strata : 
FT. IN. 
Inferior Oolite - - about 45 
MidfordSand T - 135 
Upper Lias clay and basement-beds - 17 
Middle Lias p - - - - - 10 6 
207 6 
Dr. Wright mentions that at the Halfway House the Sands were bored 
to a depth of 140 feet before reaching the Upper Lias clay.f 
In the following list of the principal fossils from the Inferior Oolite 
Series of the neighbourhood of Sherborne, the species marked (E) were 
collected by Mr. John Rhodes, and those marked (W) by myself: the 
fossils were identified by Messrs. Sharman and Newton. Other species 
marked (H) and (B) are given on the authority of Mr. Hudleston and 
Mr. S. S. Buckman. 
* Hudleston, Inf. Ool. Gasteropoda, p. 50 ; Buckman, Inf. Ool. Ammonites, p. 9. 
f Quart. Journ. Geol. Soc., vol. xvi. p. 34. 
