182 
Report on Mineral Veins 
rMontlily Microscopical 
L Journal, Oct. 1, 1869. 
II. — Be^ort on Mineral Veins and their Organic Contents in 
Carboniferous Limestone. By Charles Moore, F.G.S. 
At the late meeting of the British Association at Exeter I con- 
tributed a paper on the above subject, and as many of the organic 
remains to which I then referred belonged to the Microzoa, a short 
notice of them, and the peculiar circumstances under which they 
were found, may not be uninteresting to the readers of the ' Monthly 
Microscopical Journal.' I stated that my attention had for some 
time been directed to the altered conditions many of the secondary 
rocks presented when they came in contact with the Carboniferous 
Limestone of the Mendip Hills, especially when they rested against 
their southern side. Throughout the whole of the district I found 
that the Carboniferous Limestone, during the secondary epoch had 
formed the floor of the sea bottom in the later liassic and Ehoetic 
periods, that they then became greatly fissured, and received within 
their walls the minerals and other inorganic contents with which 
they are now filled, together with the organic remains that were 
in existence in the seas of the period. These fissures or veins ex- 
tended throughout the entire length of the Mendip Hills, for a 
distance of thirty-five miles. At Charter House a shaft had been 
sunk for lead ore to a depth of 270 feet, and at this distance from 
the surface I found a deposit of blue clay in the vein, from which I 
obtained 120 species of organic remains, about 100 of which, though 
obtained from a vein in Carboniferous Limestone, were really as 
young as the lias. 
The Ehizopoda thus found I had previously obtained with 
others in stratified beds of the lower lias,* whilst the Entomostraca 
appear to be of species hitherto found only in the Carboniferous 
Limestone. 
FOEAMINIFERA. 
Cristellaria rotula, Lamk. 
„ costata, D'Orb. 
Dentalina communis, D'Orb. 
„ obliqua, Linn. 
„ ohliquestriata, Eeuss. 
Frondicularia striatula, Eeuss. 
Involutina liassica, Jones, 
sp. 
Marginulina lituus, D'Orb. 
Nodosaria raphanistrum, Linn. 
„ radicula, Linn. 
„ paucicostata, Eeuss. 
Flanularia Bronnij Eoem. 
Entomostraca. 
Bairdia, pleheia, Eeuss. 
hrevis, Jones and Kirby. 
hilohata, Miinst. 
fahuUna, J. and K. 
„ intermedia, Miinst. 
„ amhigua, Jones, M.S. 
„ cequalis, Jones, M.S. 
„ spinifera, Jones, M.S. 
„ Thraso, Jones, M.S. 
Kirkhya plicata, J. and K. 
Moorea tenuis, Jones, M.S. 
* See "Abnormal Conditions of Secondary Deposits," &c., * Quart. Journ. Geo. 
Soc.,' p. 473. 1867. 
