202 Mr. Maclauchlan's Notes to accompany a Geological Map 



These are the only interruptions to working the coal of any consequence which have been ascer- 

 tained ; those found occasionally in other pits occur here, but they are of temporary inconve- 

 nience. 



Above the ''Trencher" is a bed called ''the Spider/' which is wrought at 

 Gorse Hill, about a mile south of Coleford, and in no other place as far as 

 could be ascertained. 



Above the "Coleford High Delf" is the " Whittingtons Delf," known also 

 as the " Yard Coal." It is worked principally in Bream district, but is found 

 at Dark Hill, and its clay is said to have been cut through in a shaft sunk to 

 the west of Birch Hill Lodge, though no trace of coal was observed. From 

 its position in the series, it is presumed to be the same bed, with that which 

 crops out again on Carter's-piece Meend, at Nail Bridge ; and it thins out on 

 the west side of the field in the Haywood Enclosure, with several others, in- 

 cluding the strata of sandstone in which the coal beds occur. This fact was 

 proved by a level driven by Mr. Moses Teague at Cinderford Bridge from the 

 "Churchway," one of the clay beds, to the " Coleford High Delf," without 

 meeting with any other coal seam. At Staple-edge Enclosure the " Whit- 

 tingtons" is brought in again with the strata of sandstone, and is traceable 

 thence to the Bream district. 



The "Nag's-head," or " Yorkley" seam, is nearly parallel to the " Braz- 

 zilly" above it, and the " Whittingtons" below, except in Ruerdean-hill En- 

 closure, where the true position has not been well ascertained. The outcrop 

 of the sandstone beds, may be easily traced by the step made in the wearing 

 away of the clay and coal, leaving a projecting hard ledge of rock. In the 

 clay beds there is no such guide ; and the information collected from the 

 miners, and occasional traces of coal, have been relied on. 



As the outcrops of the clay-bed seams are faintly indicated, no attempt 

 has been made to trace them on the surface above the " Parkend High Delf". 

 This bed is occasionally called the "Lowery", and is well known around the 

 field by these names. Those above it are not so generally worked, and the 

 outcrop has not been so well ascertained. The uppermost seam, called the 

 "Woor Green," is known only near Cinderford Bridge, or a little east of 

 Yewtree- brake Lodge, where it has been wroug-ht. An outcrop near Crab-tree 

 Lodge is supposed to belong to the same bed ; and one cut through in digging 

 the well at the " Speech House," may be a continuation of it ; and this sup- 

 position is in some measure confirmed by the structure of the ground. The 

 dotted line in the map defines the probable course of the outcrop. 



The beds between this and the "Parkend High Delf", are enumerated in 

 Mr. Mushet's List and Section (Geol. Trans., 2nd Series, vol. i. p. 288), but 

 all endeavours to trace them around the field have been unsuccessful. 



