MINERALS FOR THE PARIS EXHIBITION. GILPIN. 251 



The following analyses made at different periods will show the 

 general uniformity of the seam : 



(1871.) Analysis by Dr. How. 



Moisture 3.04 



Volatile Combust. Matter.31.14 



Fixed Carbon 61.50 



Ash . . 4.32 



100.00 



Average Coke 70.30 



Theoretical Evapora- 

 tive power 9.06 Ibs. 



Sulphur 1.24 



Specific Gravity .... 1.30 



(1890.) Analysis by the Writer. 



Slow Coking. Fast Cokiug. 



Moisture 420 .420 



Volatile Combustible Matter 34.962 37.1 10 



Fixed Carbon 59.993 57.845 



Ash . . 4.625 4.625 



100000 100.000 



Sulphur . . . .' 95 .95 



(1891.) Average Samples from Five Sections of the Mine. 



Moisture 1.536 



Volatile Combustible 



Matter ..36.372 



Fixed Carbon 57.008 



Ash 5.084 



Sulphur 1.894 



Of the underlying seams in the North Sydney district, not 

 much can yet be said. The General Mining Association has 

 recently proved them by a shaft to the fourth seam. These 

 seams are of good quality, and from three to four feet thick. I 

 append an analysis of the third seam, made a few years ago, 

 from samples taken from the openings of the North Sydney 

 Mining Company, along its outcrop : 



Moisture 2.06 



Volatile Combustible 



Matter ..30.16 



Fixed Carbon . . . 60.32 



Ash . . 7.46 



100.00 



Subhur .84 



These seams are now receiving attention at the hands of the 

 Sydney Coal Company, and, although' thinner than the main 

 seam, will undoubtedly in the near future prove valuable from 

 their uniformity and proximity to deep water. 



