336 



THE CARBONIFEROUS SYSTEM. 



15. Laminated compact coal. 



16. 

 17. 





much mineral charcoal. 



5> 



J) 



18. Shaly coal, impressions of plants. 



The results of assays of these several samples are given in the 

 following table : — 



Assays of Samples of Coal taken at distances of one foot in the 



Deep Seam. 



Volatile matter 

 by rapid coking. 



(24-8 

 ■ Good coal ... ■< 25-2 



(28-4 

 Ironstone and coal 268 



(23-2 



Coarse coal 



Good coal 

 Coarse coal 



Good coal 

 Coarse coal 



Good coal 



Shale and coal 



Volatile matter 

 by slow coking. 



21-0 

 25-2 

 23-9 

 27-5 

 20-5 



Carbon fixed. Ashes. 



123-6 

 26-2 

 25-2 

 (24-8 

 1 24-8 

 23-4 

 230 

 27-4 

 290 

 26-8 

 24-6 

 17 6 



20 



22 



22 



20 



22 



20 



20-1 



23-9 



22-9 



21-9 



19-9 



211 



67-6 

 67-3 

 70-8 

 18-5 

 59-1 

 48-0 

 70-3 

 49-3 

 68-9 

 64-3 

 51-2 

 55-3 

 68-1 

 71-5 

 69-6 

 63-8 

 23-0 



11-4 

 7-5 

 5-3 



54-0 



20-4 



31-6 



7-3 



28-6 



10-7 



13-4 



28-3 



24-6 



8-0 



5-6 



8-5 



16-3 



55-9 



The following summary of these two beds and the intervening 

 measures, from the observations of Mr Poole in sinking the first 

 engine pit at the Dalhousie Mine, gives at the same time an idea of 

 the gigantic development of workable coal at this place. 



Ft. 

 Surface clay ...... 



Shale and bands of ironstone alternate 

 Main Seam — Ft. 



Coarse coal ... 



8 

 64 



m. 



2 



10 



Good coal 

 Ironstone 

 Good coal 

 Ironstone 

 Coarse coal 

 Ironstone 



5 







14 







7 

 



ui. 

 2 

 

 6 

 4 

 4 

 7 

 4 



Carry forward, 28 3 73 



