186 



ON SOME TRAILS AND HOLES FOUND IN BOCKS 



yds. 



White flaggy Rock, marked with red 

 streaks and edges 4 



Dark Sliale, containing Shells of the 

 genera avicula (pecten), gonia- 

 tites, die. 5 



Coal (Gannister), excellent for smithy 

 purposes, and often called the 

 " Rabbit" and " Mountain" mine, 

 from the circumstances of its 

 being generally worked by means 

 of levels on the hill sides 



ft. in. 

 1 6 







Hard heavy Stone, full of itigmaria 

 ficoides, an excellent material for 



roads (Gannister) 



Smooth white Clay, sometimes chang- 

 ing into Gannister 



Light-coloured Stone 4 



Grey Metals 5 



Black Shale 2 



Coal (Foot Mine) 



Soft brown Stone Floor, containing 



layers of Ironstone 1 



Black Shale 15 



Coal (Bassy), never worked in the 

 neighbourhood of Bury 



Grey and Brown Shale 6 



Close bedded Rock, which divides 

 into cubes 3 



Excellent light-coloured Building 

 Stone, (Woodhead Hill and 

 Lomax Wood Rocks) 7 



I 8 



' The principal mine of Sta- 

 leybridge, Waterhead, Roch- 

 dale, Bacup, Burnley, Black- 

 bum, Habergham Eaves, 

 Halliwell, Darwen, Chorley, 

 Upholland, and Newburgh. 

 It varies in thickness from 

 five feet eight inches in Dules- 

 gate, Todmorden, to about 

 two inches at Affeside and 

 Harwood, near Bolton. 



1 2 







- 



One of the best building 

 stones in the coal series. 

 This is about its average 

 thickness, but there are in- 

 stances of its being much 

 thicker. 



