346 
DURNFORD I DEEP BORING NEAR SELBY. 
Thickness of Depth from 
No. Description of Strata. Strata. Surface. 
Ft. In. Ft. In. 
Coal Measures — continued. 
73. Stone-bind 
13 
0 
1,704 
Q 
74. Dark-blue shale ... 
27 
0 
L731 
0 
75. Fire-clay ... ... 
1 
0 
L732 
0 
76. Sandstone 
4 
0 
L736 
0 
77. Stone-bind 
8 
0 
1*744 
0 
78. Blue shale 
24 
0 
1*768 
0 
79. Dark-coloured shale 
4 
0 
1,772 
0 
80. Fire-clav... 
4 
0 '. 
1,776 
0 
81. Stone-bind 
5 
0 
1^781 
Q 
82. Light-coloured shale 
6 
0 
1,'787 
0 
83. Dark-coloiu'ed shale 
13 
0 
L800 
0 
84. Light grev sandstone 
14 
0 
1^814 
0 
85. Blue shale, very friable 
5 
0 
1*819 
Q 
86. Stone-bind 
18 
0 
1,837 
0 
87. Blue shale 
3 
0 
l'840 
0 
88. Stone-bind 
2 
0 
L842 
0 
89. Blue shale 
41 
0 
L883 
0 
90. Grrev sandstone 
41 
0 
1,924 
0 
91. COAL 
0 
0 
1,924 
9 
92. Fire-clay 
4 
0 
1*928 
9 
93. Shale: rotten 
48 
3 
1^977 
Q 
94. Blue shale 
7 
0 
*. 1^984 
0 
95. Stone-bind 
74 
0 . 
. 2,058 
0 
96. Blue shale 
61 
0 . 
. 2,119 
0 
97. COAL: inferior 
... 3 
0 . 
. 2,122 
0 
98. Fire-clay 
8 
0 . 
. 2,130 
0 
99. Light-coloured stone ... 
40 
0 . 
. 2,170 
0 
100. Blue shale 
8 
0 . 
. 2,178 
0 
101. Light-coloured stone ... 
17 
0 . 
. 2,195 
0 
102. Blue shale, with coal veins 
22 
0 . 
. 2,217 
0 
103. Grey sandstone ... 
63 
0 . 
. 2,280 
0 
104. Blue shale 
91 
0 . 
. 2,371 
0 
