168 
SECTION No. 6—Continued 
Section of the Coal Measures of the Forest of Dean 
Taken from the Memoirs of the Geological Survey, 1856, Vol. I. 
Thickness| Distance 
J Total 
Description of Measures tudeet ee de h @ 
inches | coal seam 
£i, anil» fh. se eee eee 
100—Under-clay ... “ue ace oo 45¢ 2 0 | 58.7 1250585 
101—Coal . 0 8 
102—Carbonaceous shale... 0 9 Upper 
103—Coal . oe 0 6} Church- 42 
104—Under- clay 1 6 | way Delf 
105—Coal . or 9 
106— Under- clay .. : 1540 
107—Soft argillaceous shale. ea oF 4 2 
108—Arenaceous shale ... Ae aoe “Be ee! 
109—Argillaceous shale ... wa af wec| 28) O)}, 53) 8) 12S ome 
110—Coal . 1 0) Lower 
111—Carbonaceous shale... 0 0 ol Church- 2 0 
112—Coal .. ae .. O 6) way Delf 
113—Under- clay .. Als “Bc aus 3 6 
114—Argillo arenaceous shale ... aoe eel, OOO), 
115—Sandstone ... fon 50 ss| 12°°.0 
116—Argillo arenaceous shale ... se Ses 9 0)), 59) (G3) 1245aaa 
117—Coal (Shafnels te oF e Ace, 0 6 
118—Under-clay ... S20 ae 0c 2 0 
119—Sandstone and shale oes 5x ase] 90 0.) 92, Gy 1S4 iia 
120—Coal oecgn ee ee as ioe A 
121—Under-clay .. “ec oak a was 2 6 
122—Sandstone ... , s-.| B00) 10 
123— Arenaceous and argillaceous shale wea| tol 0 
124—Sandstone ... : c ; 18 0 
125—Arenaceous shale 9 0| 432 3/1773 4 
126—Coal regs ae 70, 
127—Under-clay .. ae ad ass 3 0 
128—Sandstone ... os9 ae ae .-.| 150 0} 155 9 | 19298 
129—Coal mee thee a 2 6 
130—Under-clay .. nes oe see 3.0 
131—Sandstone ... eee ae ees ««.| 134.07) 139 6)/)2068eag 
132—Coal ee ne ee a 5 0 : 
133—Under-clay .. afr re 4 0 
134—Sandstone ... aoe cee BAe .2.| 120° 0) 129) 0) 2197 am 
135—Coal (Upper pees eo 2 0 
136—Under-clay .. we ay es 3.0 
137—Sandstone ... toe ae Soc sce) 26. 0 
138—Marl ... os ree sce ees roc 1 0 
