458 Notices of Wemoirs—D. Stur—On British Coal-plants. 
met with. It is probable that the great band of the Millstone-grit, 
which in the Pennystone and Barnsley district is beneath the horizon 
of the Schatzlarer beds, may represent the Ostrauer deposits, and in 
this case the second Culm-flora might be looked for in the thin Coal- 
seams occasionally occurring in the Millstone-grit. It is further 
possible that the Coal-measures of the Scotch basin may correspond 
with the Silesian Ostrauer beds. 
III. The greater part of the coals obtained in England are from 
the horizon of the Schatzlarer beds. To this horizon belong the 
Coal-areas of Newecastle-on-Tyne, Leeds, Pontefract, Barnsley, 
Sheffield, Derby, Leicester, Dudley, Coalbrook-Dale, Newcastle- 
under-Lyme, Manchester, Oldham, Lancaster, and of Whitehaven 
and Wigton. 
IV. The Upper Carboniferous horizon of the Bohemian Rossitzer 
beds occurs in England in the area of the Bristol Channel, near 
Bristol and Radstock, and in the vicinity of Merthyr Tydvil, over 
Swansea to Caermarthen; and more to the north the Coal-fields of 
the Forest of Dean, the Forest of Wyre and near Wigan, belong 
to this same Upper Carboniferous horizon. 
V. It is remarkable that up to the present no trace of the presence 
of this Upper Carboniferous horizon has been met with to the east 
of the great band of Millstone-grit, and in this respect there is a 
striking correspondence with the Coal-fields of Westphalia, Belgium 
and Northern France, which belong to the Schatzlarer horizon, and 
in which the Upper Carboniferous Rossitzer beds are not represented. 
VI. The Upper Carboniferous, on the other hand, occurs in 
Central France, Bohemia and Saxony, also in Banate, and frequently 
unconformably on much older strata. Thus, also in the line from 
Swansea, Bristol, Forest of Dean to Shrewsbury the Upper Carbon- 
iferous beds are in places unconformably deposited on older strata. 
VII. Further, there is in England no trace of the horizon of the 
Schwadowitzer beds of north-eastern Bohemia, of the Saxon beds 
of Oberhohndorf near Zwickau, nor of the Radnitzer and Zemech 
beds. These horizons may probably be looked for where the beds 
of Schatzlarer approach those of the Upper Carboniferous, as at 
Wigan and at Coalbrook- Dale. 
VIII. It may be concluded from the absence of particular beds 
in the Carboniferous series of England, France, Belgium and West- 
phalia, that great changes in the configuration of the land took 
place during the deposition of the Coal and its associated beds ; 
that they were by no means continuously laid down; and that the 
changes in the flora of the individual horizons indicate enormously 
prolonged intervals of time for their production. 
The author further adds short critical notices of the more important 
species of fossil plants in the Hutton Collection, now preserved in 
the Museum at Newcastle-on-Tyne. 
