416 
THE GEOLOGIST. 
PARTICULARS OE THE STRATA SUNK THROUGH AT COTMANHAY 
COLLIERY, IN THE PARISH OF ILKESTON, IN THE COUNTY OF 
DERBY. 
Ko. 
of 
Thickness 
No. 
Ol 
Thickness 
of Strata. 
[Name oi Strata. 
of Strata, 
N ani3 of Strata. 
Str. 
yds. ft. 
in. 
Str. 
yds. 
ft. 
in. 
1 
J 
2 
0 
0 
oOU dDu clHy. 
80 
0 
1 
2 
Coal 
9 
0 
2 
a 
0 
Coal. 
31 
A 
U 
I 
A 
O 
Fire clay. 
3 
1 
0 
a 
0 
Soft clunch. 
32 
1 
1 
A 
U 
Strong stone clunch. Tub- 
A. 
0 
2 
0 
Brown stone 
bin corb. 
K 
O 
2 
I 
n 
U 
OUIL UlUU.. 
33 
o 
o 
A 
U 
Strong bind with ironstone. 
U 
0 
0 
Q 
o 
IroD stone. 
84 
A 
U 
1 
A 
U 
\->ld\* oLUUc, 
7 
2 
1 
Stone bind. 
35 
A 
U 
A 
u 
Da 
Ti*nTi cf nnp 
Q 
O 
0 
1 
J 
VTlcy bLUUc. 
36 
A 
0 
9 
<C 
A 
\J 
rsiiPk" ciiiiP wTf n 1 
9 
0 
I 
Q 
O 
OLUUc UIllU. 
Jai^e balls ol \ ni^^ck 
ironstone ^ rs.l'^e 
OlUUc ^UUllUUl I 
in 
7 
1 
C 
o 
Soft soapy bind.. 
1 1 
1 i 
1 
0 
D 
OUiL UlUu. V>Jlil UldLA 
UdllUoUl LJJllI 11 UlJbLVjllo. 
37 
A 
U 
A 
u 
1 9 
J. ii 
0 
2 
D 
38 
A 
U 
9 
9 
r^laplr criQiP 
JtJiaLiv oLIdiC 
1 ^ 
1 
0 
OulL *>JJllc UlUU* 
39 
A 
U 
1 
O 
V^lUllCll. 
14 
0 
1 
Q 
O 
Tqtt fmn PMol 
<P 
40 
1 
9 
A 
U 
OtVJlIC UllJvi. V>iLlJ llUlISLL/liC 
1 0 
1 
1 
Q 
O 
Dark clunch.. 
41 
A 
U 
1 
9 
V-/Udl V JLII ) . 
J 0 
0 
1 
i 
Stone. 
B 
42 
A 
9 
<& 
ft 
0 
OLlUUii, blUUC ClUliLU. 
17 
2 
1 
A 
U 
OLUnL Ullltl \\IL11 llUIl- 
o 
43 
q 
o 
A 
yj 
a 
u 
oLUiic Ucuo. 
> ^ 
44 
A 
U 
± 
A 
U 
linn pn 
18 
0 
0 
Ti'micf nnp I \\ liptQfnTiP 
Xi UiloLUUC, V «» JlL-toLUilC 
45 
0 
1 
4 
Coal. 
— 
46 
o 
A 
U 
A 
U 
19 
7 
2 
A 
U 
Broad bind with irou- 
U 
47 
5 
o 
A 
u 
A 
VJ 
Stone and Cank. 
stone beds. 
"5 
48 
4 
0 
0 
OLIUU^ bLUllc UlllU.. 
20 
1 
0 
4 
49 
0 
2 
6 
j.*icixi] aiiiiit. 
21 
0 
0 
3 
Ironstone. 
50 
0 
0 
6 
Soft clunch. 
22 12 
0 
0 
Broad black bind. 
51 
2 
8 
Stone. 
23 
1 
2 
6 
Soft white bind. 
52 
I 
2 
6 
Strong broad bind. 
24 
1 
0 
2 
Black shale. 
53 
0 
2 
jNIain soft coal. 
25 
0 
2 
9 
"White bind. 
54 
I 
0 
4 
Bat. 
26 
27 
0 
1 
0 
0 
4 
2 
Ironstone "| ^ 
Black shale I 
Ironstone J 
55 
56 
2 
1 
0 
0 
0 
0 
Stony chinch. 
Dark stone. 
28 
0 
0 
4 
57 
0 
0 
Strong broad bind with 
29 
0 
1 
6 
Bind and shale alter- 
nately. ^ 
58 
1 
0 
4 
small beds of ironstone. 
Hard Pothouse coal (main) . 
BEITISH ASSOCIATION MEETING AT CAMBEIDGE. 
ON BITUMINOUS SCHISTS* AND THEIR RELATION TO COAL. 
By Peopessor D. T. Ansted, M.A., F.R.S. 
Kocks in wLich naplitlia, petroleum, rock oil, bitumen, asphalte, and 
otlier mineral hydrocarbons are present in sufficient abundance to cha- 
* This term, " bituminous schists," is not altogether correct, as the minerals so called 
do not contain bitumen properly so called. It is, however, in familiar nse, and to be 
preferred to the term " pyro-schist " suggested by Dr. Sterry Hunt, which is equally in- 
correct, without having the advantage of being familiar. 
