D. G. Lillie—Fossil Flora, Bristol Coal-field. 59 
years, important and able papers by Mr. James McMurtrie, F.G.8.,} 
and Mr. H. Bolton, F.G.S.,? have been added to this lst. It will 
only be necessary to very briefly recapitulate the main characters of 
the area for the purposes of the present paper. 
The Coal-measures of the Somerset and Bristol basin consist of two 
productive divisions, separated by the Pennant Rock. The upper 
division, lying above the Pennant, is again divisible into a higher, 
the Radstock Series, and a lower, the Farrington Series, separated 
by barren beds known as the Red Shales. The lower division cam be 
also subdivided into the New Rock and Vobster Series, though the 
line of demarcation between them is less distinct. The succession of 
the Coal-measures in that part of the basin which intervenes between 
the Radstock district and the neighbourhood of Bristol is not known 
with certainty; but the main stratigraphical divisions of the latter 
appear to correspond with those at Radstock, though it has not been 
found possible to correlate the coal-seams of the two areas. Indeed, 
the correlation of many of the seams, even within the Bristol area 
itself, are either unknown or uncertain. 
The following table indicates a comparison of the series in the two 
districts, and includes the names of the collieries at present working 
in the Bristol area :— 
Rapstock AREA. COLLIERIES IN THE Briston AREA. 
Radstock Series 
Upper (about eight seams). Absent. 
Division ~ Red Shales. Very thin. 
(2200 feet) | Farrington Series Coal Pit Heath Colliery. 
(six or more seams). Working ( Parktield Colliery. 
same seams | Shortwood Colliery, 
Pennant Rock (3000 feet). 
New Rock Series Working ( Kingswood Collieries (Speed- 
Lower (eighteen or more thin same well Pit, Deep Pit), Haston 
Division - seams). seams \ Colliery. 
(2800 feet) | Vobster Series 
(eight or more seams). Hanham Colliery (?). 
We thus see that there are now only three collieries at work in the 
Farrington Series in the Bristol district. Each, however, is working 
several seams, and all three have yielded fossil plants; but the exact 
seam from which they came is unknown. Coal Pit Heath Colliery is 
probably working higher seams in the Farrington Series than Parkfield 
and Shortwood Collieries. Two collieries are working, three pits in 
all, in the New Rock Series, but only one specimen could be obtained 
from the heaps after repeated searching. The Hanham Colliery, 
which, it is believed, is working the Vobster Series, has also proved 
entirely barren as a collecting-ground. : 
Thus the impressions described here are all derived from the 
Farrington Series, and these may be compared with the flora of the 
same series in the Radstock area, already described by Kidston.’ 
So far we have been concerned only with the impressions, but some 
' McMurtrie, Trans. Inst. Mining Engineers, 1901, vol. xx. 
2 Bolton, Q.J.G.S., 1907, vol. Ixii, p. 445. ¥ 
3 Kidston, ‘Trans. Roy. Soc. Edinb., vol. xxxiii, pt. 1, p. £10. 
