88 lEON OEE AND COAL DEPOSITS AT WALLEBAWAJi^a. 



land nor of true aquatic plants, but of sucli as go to form the peat 

 mosses, the mango and other swamps of the present day ; hence a 

 considerable depression of the area would be inimical to such 

 growths. After this process of depression had gone on for a 

 certain time, then the area was again slowly upheaved and the 

 remaining eight or nine feet of coal was accumulated. 



The quality of the coal is very good : it is hard and compact, 

 and would therefore be well adapted for certain metallurgical 

 processes, especially for use in the blast furnace, where it would 

 have to sustain a great weight, and under circumstances where 

 ordinary tender bituminous coal would have to be previously 

 coked. 



It possesses a sp. gr. of 1"333. 



Analysis of 17 ft. 6 in. seam of coal. 



Moisture 1-51 



Volatile hydrocarbons ... 33"2-l' 



( Fixed carbon ... 55"74 

 9-50 



99-99 



^^^'^ 1 Ash; whitr" :;: l-5o 1 = ^^ -^ ^°^^- 



It is very free from sulphur. 



This bed, in common with the others, is nearly horizontal ; it 

 has, however, a dip of aboiit 2° to the N.E. 



8eam No. 2. — An outcrop of this bed is seen in Coal Grully, 

 and an exploratory level has been driven into it to a distance of 

 about 60 feet. 



At the outcrop, where cut by the level, it is seen to be about 

 6 feet 10 inches in thickness, with a 2-inch parting of fire-clay, 

 which, however, is gradually pinched out as the level proceeds 

 inwards, and finally disappears altogether on the face. 



The roof is a hard and compact sandstone. Throughout their 

 entire thickness the coal measures consist of alternate beds of 

 fire-clay or shale — the original soil on which the coal vegetation 

 grew — coal and sandstone succeeded by shale, then coal again, and 

 so on. Occasionally the order may be slightly altered, but in the 

 main the series is continued throughout in that way. 



In quality the coal is almost identical with the former one, but 



as is shown by the analysis, it contains rather more combustible 



matter and less ash. Like the former, it is very free from sulphui*. 



Coal from Seam No. 2. (6 ff. 6 in.) 



Moisture 1'95 



Volatile hydrocarbons ... 27"25 



^1 ( Fixed carbon ... Gl'SG") ^a.da ^..%,> 



Coke -^ A 1, i,v o nA ?■ =^ 70 80 coke. 



(Ash, white ... 8-94< S 



10000 



It possesses a sp. gr. of 1'398. 



