74 CASH & HICK: FLOE A OF THE LOWER COAL MEASURES. 
Oldham in Lancashire, and in the parish of Halifax in York- 
shire. In the former place the intelligent and painstaking 
labours of Messrs. Aitken, Butterworth, Earnshaw, and Nield 
have produced a rich harvest, whilst in the latter district 
Messrs. Binns and Spencer have largely collected for several 
years. We propose in the following paper to restrict our 
remarks to the plants which have been collected in the 
Halifax district. 
GEOLOGICAL POSITION. 
The bed of coal in which the plant remains (having 
minute structure preserved) are found, is known as the 
" Halifax Hard Bed Coal," which lies in the lower portion of 
the Ganister Beds, between the Elland Flagstones and the 
Rough Rock or uppermost member of the Millstone Grit 
series. 
The following is the order of superposition : — 
Ft. 
In. 
Ft. 
In. 
Elland Flagstone, - 
- 130 
0 
to 
210 
0 
Shales, &e., - 
50 
0 
55 
120 
0 
80 Yards Band Coal, 
0 
6 
55 
80 Yards Band Eock, 
55 
20 
0 
Shales, &c, - 
45 
0 
55 
120 
0 
48 Yards Band Coal, 
0 
6 
55 
1 
2 
Shales, &c, - 
35 
0 
V 
36 Yards Band Coal, 
0 
7 
5> 
1 
8 
Fire-clay, - 
1 
6 
55 
4 
0 
36 Yards Band Bock, 
JJ 
15 
0 
Shales, &c, 
90 
0 
55 
100 
0 
Halifax Hard Bed Coal, 
2 
3 
55 
2 
0 
55 
6 
0 
25 
0 
» 
30 
0 
Middle Band Coal, 
0 
6 
55 
0 
10 
Middle Band Bock, 
55 
12 
0 
Shales, &c, - 
35 
0 
55 
60 
0 
Halifax Soft Bed Coal, - 
1 
6 
55 
Soft Bed Flags, 
» 
110 
0 
30 
0 
55 
80 
0 
Shales, &c, - 
0 
6 
55 
Fire-clay, - 
1 
0 
55 
Bough Bock (Millstone Grit), 
Base. 
