150 



coal ti'ough has been broken up iuto separate basins. Its direction 

 probably runs eastwards under North Wilts, Oxfordshire, Hertford- 

 shire, the South of Essex, and the North of Kent towards Calais." 



Numerous borings show us that rocks older than the carboni- 

 ferous run eastward under London : 



FEET. 



Chatham Middle Oolite 943 



Crossness Old lied Sandstone 1015 



Turnford Old Red Sandstone 984 



Ware Silurian 795 



Meux's Brewery. . Devonian 1065 



Richmond Devonian 1237 



Burford Carboniferous 1409 



Calais Carboniferous 1102 



Dover Carboniferous 1 113 | 



Continued in Coal Measures to 2178 > 

 Containing 21 feet of good workable coal ; 



The Dover Coal beds, instead of dipping at a steep angle as 

 do the beds on the other side of the channel, are horizontal. This 

 is a great advantage, and indicates that a central position has been 

 struck. The coal is of good quality, and is not crushed or broken 

 as it is in the North of France. 



COMPARATIVE ANALYSIS OF COAIS : 



Dover Coal 



Newcastle, i8 .samples .. . 

 Derby & York, 7 .samples. 

 Lancashire, 28 samples.... 



Hydrogen. Nitrogen, j Oxygen. 



•97 

 5-31 

 1-41 

 I '.SO 



3'23 

 5 '69 



10-28 



9-53 



Heat 



Units. 



14,867 

 14,820 

 13,860 

 13.91S 



No mining difficulties but those of an ordinary nature need be 

 expected, the roof and flooring being good and all surface water 

 sliut off by the impermeable grey chalk and gault clay. The 

 worst ground was met with a short distance below the Weaklen 

 beds. 



The area of coal leased or in course of settlement : 



ACRES. 



Crown Leases 6,000 



South Eastern Railway 200 



Ecclesiastical Commissioners - 620 



6,820 



Assuming tliat the seams already proved maintain the same 



