LOWEIJ LIAS : WELLS, 89 
stdne of the ordinary type have been exposed. At Windsor Hill 
the cutting at the entrance of the tunnel, shows the Lias faulted 
against the Carboniferous Limestone. From this locality Moore 
obtained many fossils indicating the zones of Am. anc/ulatus and 
A. Bucldandi, and including many species found in the conglo- 
meratic Lias of South Wales. To the north-west, the con- 
glomeratic beds of Lios extend by Chilcot to P>ist and West 
Horrington. 
The higher division of the Lo-.ver Lias, noticed in the railway- 
cutting by Cannard's Grave, is worked to the easi tor the mnnu- 
factnre of red bricks, drain-pipes, and tiles. It consists of blue 
slightly calcareous clay, weathering brownish-yellow, nnd contains 
occasional layers of cement-stone. Northwards, clayey beds 
extend along the base of the Inferior Oolite serir?, at Doulting 
and Chelynch : but we have no evidence at present to say whether 
Middle and L T pper Lias are to any extent represented at those 
localities'. Near Bodden, it is possible that some of the higher 
stages of the Lower Lias may be present in the form of lime- 
stone, as we find to be the case near Rudstock ; but palx'onto- 
logical evidence is wanting. 
Beds of conglomeratic Lins limestone were exposed in a 
swnllet-hole by the Seven Acres Spring on the south side or 
Beacon Hiil. The limestone, which is pale gr*v and very tough, 
contains tiny pebbles of quartz, scattered through the mass of the 
rock, and clustered together here ;ind there abundantly. - The 
surface-boundary of the Lias and Old Red Sandstone here 
corresponds roughly with the underground boundary of Lower 
Limestones Shales and Old Red Sandstone, the Shales being con- 
cealed locally by the Lias. Hence it is that Swnllet Holes occur 
in this tract where the Lias is banked up against the Old Red 
Sandstone. Through the kindness of Sir I. II. Paget, I had the 
opportunity of breaking up some large blocks of this Lias lime- 
stone, but no fossils rewarded the labour. The st'iie was formerly- 
quarried by Beacon Hill Farm. (See Fig. 43.) 
The Lower Lias limestones have been quarried north-east of 
Wallcombe near Wt-lls, while in a lane-cutting near East Milton, 
a section showed the sequence of beds down to the White Lias, 
c. Attention was first directed to this exposure by the Rev. P. 
B. Brodie."* The beds were as follows : 
FT. IN. 
Zone 6 ! of f Bluish-grey argillaceous limestones, irregular, 
Ammonites ' anc * se P arate ^ by beds of blue and brown 
Bucklandi "ml ^ clay ' Llma ff^antea - - - 26 
A nnr.nlnt',,* \ Hard and compact light grey limestones with 
L thin shaly partings . - 7 
| Hard marly limestones and slaty marls 2 7 
Zone of ' Hard smooth-jointed bluish-grey limestones, 
.1. -lianorbis ^ Becoming marly in places, separated by shaly 
bed with Modiola minima - - - 1 10 
bed with M. minima - - -05 
^ 
Beds -[ ^ oni P act bluish-grey limestone (Jew Stone) - 010 
' \ White Lias. 
* Quart. Journ. Geol. Soc., vol. y.xii. p. 93 ; see Vertical Sections, Geol. Survey 
Sheet 46, No. 14. 
