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expensive in the working. Messrs. Trask have other quarries to 
the South of Doulting, and are always much gratified by receiving 
visits at their works by learned societies. 
Starting again on the way to the summit of Mendip in a short 
half-mile, the great quarry of the Carboniferous limestone at 
Waterlip was passed on the right. The limestone here dips 
steeply to the South from the flank of the Mendips, as on the 
Northern side of the range of hills it dips steeply to the North, 
the highest ridge being formed of Old Red Sandstone with here 
and there an exposure of the igneous rock, erupted in remote 
ages through the Old Red Sandstone in this range of hills. A 
company which worked this Waterlip quarry, and still works 
quarries round Shepton Mallet, absurdly styles the metal it 
supplies for mending roads “ Mendip granite,’ the truth being 
that not an atom of granite exists in the Mendips. The nearest 
approach to such a rock, although not at all resembling it in 
structure is the igneous outburst quarried for road metal ata 
quarry on the right hand of the road descending Moon’s hill, 
which is reached a short half-mile above Waterlip. This rock is 
an extremely hard altered Java, and until our fellow citizen, the 
late Mr. Charles Moore, discovered it cropping out to the surface 
here and there through the grass, was absolutely unknown, and 
in the geological maps of the Ordnance Survey of 1817, drawn up 
by Sir H. de la Beche and others, is not noticed. Formerly there 
were only known three vents of igneous rock in Somerset, at the 
top of Goblin Combe, at Hestercombe on the Quantocks, and in 
the Uphill Cutting of the Mendips. To the late Mr. C. Mooreis 
due the glory of discovering this fourth exposure, and painful as 
is always the acknowledgment of error among talented geologists, 
as among humbler folk, her Majesty’s Board of Geological Survey 
had to acknowledge the defect in their maps, and bestowed on an 
amateur geologist the praise of the discovery which was to him 
justly due. 
At this igneous exposure the Vice-President addressed the 
