344 ME. T. F. SIBLT ON" THE CARBONIFEROUS [May I906, 



North-west side. 



- 



Locality. 



Description. 



Horizon. 



Sheet. 



Maesbury section . . . 



Cutting on the S. & D. J. Eailway, 

 north of ' Masbury ' Station ; 

 northern end of the section 



Hor. (3 



41 N.E. 



South-west side. 



Thrupe j Old quarry by the roadside, im me- 

 diately north of Thrupe-Lane 

 Farm Z 2 



North of Sbepton The Downside Quarries, and rail- )■ 41 N.E. 



Mallet. way-cutting north of the Wind-| 

 sor-Hill tunnels (see above,] 

 p. 340) I Z X &Z 2 \) 



South side. 



Waterlip 



The Waterlip Quarries (see above, 

 p. 340) and an old quarry west 

 of the Methodist Chapel 



/3, Z lt Z 2 



Z 2 



42 N.W. 



&S.W. 



42 N.E. 



Near Downhead . . . 



Small roadside quarry, 70 yards 

 south of the Methodist Chapel, 

 between Heale and Downhead . . 



G. Isolated mass south of the main outcrop. 



Friar's Oven, south- 

 east of Croscombe, 



Exposure on the north-western flank 

 of the hill, close to the railway . 



41 S.E. 



Syringothyris-Tj one. 



Where best exposed in the Mendip area : — 

 (a) The Burrington section. 1 



Complete exposure of the whole zone. 



(6) Erean Down. 



The greater part of the zone, from Horizon y upward, is 

 finely displayed in the cliffs all round the Down, and in the 

 several quarries. 



(c) Uphill Quarry. 



The lowest 100 feet of the zone, finely exposed. 



(d) Bleadon — The Little Down Quarries. 



The two northern quarries afford a continuous section of 

 the middle part of the zone, the total vertical thickness 



1 See Proc. Bristol Nat. Soc. ser. 4, vol. i, pt. 1 (1905) pp. 29-35. 



