163 
SECTION No. 4—Continued 
Part of Vertical Section of the Strata of the Forest of Dean 
(Published by the late Mr DAvip MusHET, in 1824) 
Thickness| Distance 
Description of Measures ti Bebnecn donth 
inches coal seam 
fiesins |) eb, ins) Eb, mm. 
' 43—Gray rock, with alter seis beds of clay, 
fire- clay, &e. pias 24 0 12) 0/2833. 1 
44—Lower Trenchard coal wae sais aus DAG 2226 2 6 
MILLSTONE GRIT SERIES— 
45—Fire-clay, red gritstone, or Farewell rock...| 30 0 
46—Red sandstone, with ‘layers of red and 
white indurated marl ... 7d 0 |\o9- 
47—Upper limestone... 30 0 ee. a 
48—Pure silicious red ert “With beds of 
pudding stone... 90 0 
49—MOUNTAIN LIMESTONE SERIES— 
to Old Red Sandstone ... a 705 0 |3765 7 
Mr Mushet states that this section was constructed from 
actual sinkings, and from observations made at the surface, 
but unfortunately he does not state where the sinkings were 
made, or to what part of the Forest his surface survey was 
confined. 
The details of the limestone measures in Mr Mushet’s 
Section No. 2 have already been given at page 132. 
SECTION No. 5 
Section of Strata sunk through at Bowson Colliery, in the Northern 
portion of the Forest of Dean. 
6—Drift . 
Thickness | Distance Total 
Description of Measures autert ee sep 
inches seam seam 
Eton. | ft. 1.) ft. io 
1—Clay and shale Soc ac ice eee] Ae 3%) 127-3 
2—Coal ... ee eid = ou mee 0 10 | jg 2s ee a 
3—Rock . 3 es ae As EE ws bis Bea 8, 
4—Drift . we ie aes baa HEA ae Bee 23.7 
5—Coal crow delf can wee ae tee 1h 152 10 
wale sie nee 60 6 0 
