138 



I did not think it necessary to determine the proportion 

 of nitrogen, which ranges between 1 and 2 percent in coals. 



The Labuan-coal gave 56,10 percent of coke; but Ishould 

 observe, that the results, obtained on the small scale, do not 

 always closely agree with those, obtained on the large scale. 

 The colour of the ash of the Labuan-coal is brownish red. 



I have pleasure in expressing my opinion that the La- 

 buan-coal is a very valuable fuel , and is well adapted for 

 raising steam and various metaliurgical operations, in which 

 a copious flame is required, as in reverberatory furnaces. 

 I have no doubt that gas of good quality might be made 

 from this coal. The coal B was, and is extensively used 

 in making gas in Birmingham, and the vicinity, and you 

 will perceive how similar this coal is to the Labuan-coal. 



For the sake of comparison, f insert an analysis of a well 

 known gas-coal and one of cannel. The percentage coin- 

 position is calculated, exclusive of ash and water: 



T a Lnn C. Ti (Je ""<ld. vau de 



L,aDuan. L. U o.-Nassnu-kulen. 



Carbon 78,77 85,54 85,81 78,27 



Hydrogen .... 5,67 4,76 5,85 5,88 



Oxygen and Nitrogen 15,56 14,70 8,34 15,85 



100,00 Ï00,0Ö~ TÖÖröÖ 100,00" 

 G. is «Peareth gas-coaT' INorihumberland , and D. Wigan 

 cannel coal. 



The small quantity of sulphur in the Labuan-coal, in- 

 dicates a proportionaiely small quantity of iron-pyrites 

 and as it is especially this substance , which causes the 

 desintegration of coal on exposure to the weather, 1 have 

 no doubt that the Labuan coal is well adapted for sea-going 

 vessels. I may state that, by direction of the Admirality, 

 I recently examined a sample of Labuan-coal and found 

 its composition to be identical with that, which you have 

 submitted to me; and I uuderstand that this coal has been 

 thorouglily tried in some of H. M. steamvesseis and repor- 

 ted on favorably. 



