THE TECHNOLOGIST. [April 1, 1864. 



430 LABORATORY NOTES. 



Proximate Composition of the Coal. 



Water 0-89 



Volatile matter ....... 29*87 



Fixed carbon (coke) 68-67 



Ash 0-47 



100-00 



Amount of sulphur in volatile portion . . 0-615 



Amount in non-volatile portion . . . 0-976 



Total amount of sulphur in 100 parts 1-592 



Percentage of nitrogen . . . . i-77 



IV. — Carlisle Coal. 



Specific gravity of the coal 1-273 



Proximate Composition of the Coal. 



Water 0-76 



Volatile matter . 35-97 



Fixed carbon (coke) 57-11 



Ash 6.16 



100-00 



Amount of sulphur in volatile portion . . 3 - 026 



Amount in non-vclatile portion .... 2-288 



Total amount of sulphur in 100 parts . 5-314 



Percentage of Nitrogen 0-43 



V. — Wigan Cannel Coal. 



Specific gravity of the coal . . . . 1*284 



Proximate Composition of the Coal. 



Water 0-82 



Volatile matter 36'09 



Fixed carbon (coke) 61-02 



Ash 2-07 



100-00 

 Amount of sulphur in volatile portion . . 0-543 

 Amount of sulphur in non-volatile portion . 0-639 



Total amount of sulphur in 100 parts . 1-182 

 Percentage of Nitrogen . .1*42 



Determination op the Absolute Heating Power of the Goal 

 from Different Irish Coal-Fields. — Mr. Lewis Thomson's appa- 

 ratus was employed for determining the absolute heating power. 



Coal (Fourpenny Vein) from the Lisnacore Colliery, Kenturk, co. 

 Cork. By Charles W. Bateman, LL.B. 



Absolute Heating Power oj the Coal. 

 9-9 lbs. water, at 212 deg. F. converted into steam by 1 lb. of the coal. 

 872-44 lbs. water, at 212 deg. F. converted into steam by 1 cubic foot of 

 water. 



