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on the Drumpeller Estate, about six miles east of Glasgow) a bed containing marine 
fossils, of which are recorded (see ' Trans. Geol. Soc. of Glasgow,' vol. ii, p. 52), 
Producfus scahriculiis, Discina nitida, Better oplion Urei, Conularia qmdrisidcata, and a 
shell like Axinus deltoideus. The position of these would be about sixty-five fathoms 
above the ' Ell Coal,' and about 200 fathoms above the ' Millstone-Grit.' The locality 
was examined by many members of the Geological Society of Glasgow, including Mr. J. 
Young, wdio is perfectly satisfied as to its correctness. I know the Drumpark Colliery, 
and can certify as to the position of the coals wrought. No other similar bed has been 
discovered. I have searched all the lists at my disposal, and the following is all the 
evidence I can find of their further occurrence in the Upper Coal-measures. 
Geol. Survey of Scotland Memoirs,' No. 23, p. 92, Lingula, in a bed of uncertain 
position. 
" ' Geo]. Survey Memoirs,' No. 31, p. 79, Lingula mytiloides, in a bed of doubtful 
position. 
" ' Geol. Survey Memoirs,' No. 23, p. 91, Lingula squamiformis. Quarter Black 
Band (about fifty-seven fathoms under ' Ell Coal '). 
" In Slaty Ironstone Lingula myiiloides and L. squamiformis are mentioned by Grosart 
and the ' Geological Survey.' The latter species is not named by Hunter as occurring 
here, but doubtless it does occur. It seems to me that, with the exception of Drumpark, 
it is very doubtful if Brachiopods have been found at all in our Upper Coal-measures in 
the West of Scotland. The two doubtful horizons marked by the Geological Survey may, 
I think, be dismissed as of no value. There remains only the ' slaty ironstone' to be dealt 
with, and I at once acknowledge that Brachiopoda are found sparingly in it. But this is 
regarded as the basement of the Upper Coal-measure ; and all this means is that 
Brachiopoda extend twelve inches into this series of beds. It seems to me that if 
palseontological grounds are of any weight, this ought to be rather a reason for taking this 
bed from the Upper Coal-measures and adding it to the Millstone- Grit series." 
The Brachiopoda in the Millstone-Grit series are few in number, both in Scotland and 
in other portions of Great Britain. It is in the Upper and Lower Limestone groups that 
Brachiopoda abound, and especially in the Lower Limestone series. In the Lower Coal 
series lying between the two great limestone groups but few Brachiopods are found. 
Twenty-four species are enumerated from the lower Calciferous Sandstones and shales, 
which formation is well represented in the Island of Arran, in Dumfrieshire, and in 
Eifeshire. 
Minute Brachiopoda. — The study of the yovmg stages of Palaeozoic Brachiopoda, and 
their gradual development from the fry, from the size of a mere dot to two or three 
lines, and to the adult condition, is rarely possible ; but in various Scotch localities, 
both in the Upper and Lower Limestones, the young of a number of species occur 
in vast profusion, and in a perfect state of preservation. I am indebted to Messrs. 
