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discovery. Sufficient is still to be seen of the Liassic veins, to make 
the quarries well worthy of a visit from those who have not been 
there ; and a very small amount of patience and industry will be 
rewarded by finding some of those beautiful reptilian and fish 
remains, which have so enriched the Bath Museum. 
The more it is considered the more striking does it seem, that 
within a few silted up crevices in the Mountain Limestone, there 
should have been gathered together in so much profusion, the 
remains of races of animals peculiar to the Rhetic age ; but the 
seas of that period must have swarmed with life, and this old 
coast line has handed it down for our instruction. Consider- 
ing how much has been found in one or two limited localities, it 
ought to encourage others to research, not following too closely in 
the footsteps of those who have gone before, but striking out in 
fresh fields and pastures new. 
BASALTIC DYKE AND OTHER ROCKS OF DOWNHEAD AND 
STOKE LANE. 
The Basaltic Dyke discovered by Mr. Moore in the neighbour- 
hood of Downhead having been very carefully delineated in the 
latest edition of the Ordnance maps, the writer had intended, with 
the assistance thus afforded, to trace out the outline of these 
masses of igneous rock; but two different excursions to that 
locality were cut short by the deluging rains of the past season, and 
beyond submitting a specimen of the rock from near Tadhill House, 
Leigh-on-Mendip, he has little to say on the subject. Considering 
how many years elapsed, even in Geological times, before the 
discovery of these eruptive rocks, it may be open to question 
whether even now all the areas have been recorded. A farther 
search in the Old Red Sandstone, on the higher summits of the 
Mendip range, would be good practice for the student in Geology, 
and might lead to the discovery of areas not yet mapped. 
a On comparing the outcrops of the older rocks in the neighbour- 
