,68 PROCEEDINGS -OF THE CANADIAN INSTITUTE. 



The specimen contained 2.48 per cent, 'hygroscopic moisture. Its specific 

 gravity was 1^865. 



The combustion was made in a ^current of oxygen, the nitrogen was determined 

 by Dumas' method, and the sulphur by Nakaraura's method. 



The striking characteristic of the mineral, as shown by this analysis, is the. very 

 small percentage of hydrogen it contains, a quantity much less 'than that contained 

 in ordinary anthracite. 



With a view to comparison we made an analysis of a specimen of anthraxolite 

 from Woodruff's farm, near Kingston, kindly given us by Mr. W. G. 'Miller, of the 

 Kingston School of Mining. The specific gravity of this mineral was 1.365 ; it 

 contained 0.96 per cent, of moisture. The'analysis of the dry substance gave : 



I. II. Mean. 



Carbon 90.27 90.23 90.25 



Hydrogen 4.18 4.14 4.16 



Nitrogen 0.52 0.52 0.52 



Sulphur 0.66 0.66 0.66 



Ash 0.63 0.80 0.72 



Oxygen, by difference 3.74 3.65 3.69 



In this sample the percentage of hydrogen is higher than in most anthracites, 

 and very much higher than in the Sudbury mineral, which, indeed, differs from it 

 as much as the average anthracite differs from bituminous coal. 



We have determined the calorific value of the Sudbury "coal " by means of 

 Fischer's calorimeter. We found that one gramme of a sample 'containing 3.99 per 

 cent, of ash gave on burning 7,490 calories. This will gave a calorific value of 

 7,800 for the ashless fuel. 



On the large scale, so far as the deposit has yet been examined, the ash runs 

 from 20 to 30 per cent. The calorific value will, therefore, be correspondingly lower. 



