138 Coal-Seatns of Van Dienien's Land. 



Feet. Inches. 



Coal 6 



Blue Fire Clay 8 



Clod 4 4 



White Sandstone 4 



Coal 2 3 Dip(E. 20°N.) 10° 



Total 18 



The Mersey Coal Company's bore-hole before men- 

 tioned in -which they had cut a seam of Coal is situated 

 about 80 or 90 yards north-easterly from the above shaft, 

 and the seam cut is the same as the one in Messrs. Dean 

 and Denny's shaft on the opposite bank of the river : the 

 rise of the ground, the distance, and dip of the seam will 

 hardly explain without another fault the greater depth (134 

 feet) at which the Coal was cut in the bore-hole. Should a 

 shaft be sunk on the site of this bore, I believe that to the 

 eastward or towards the Company's land the Coal will be 

 found to be again cut off by a fault ; as in ascending the 

 hill in the above direction we come on beds of yellow gritty 

 and argillaceous shales full of corals and other fossils of the 

 limestone series. See Section PI. V., fig. I. The Coal 

 discovered by Mr. Williams is, I believe, a portion of the 

 same seam. 



Wherever this seam has been cut it is of excellent quality; 

 but the very small area over which it appears to extend on 

 the River Don (from 50 to 80 acres) renders it very doubt- 

 ful whether the large outlay would be repaid which is neces- 

 sary for the construction of four miles of tramway, the 

 erection of an engine, and other expenses (not much less 

 than £14,000), before the Coals could be shipped. 



Taking the area at 70 acres it would give a yield of 



