530 



well mixed. Some ounces of this were then reduced to 

 impalpable powder, and from this all the portions to be 

 operated upon were taken. 



I. ANTHRACITES OF THE SOUTH OF IRELAND. 

 Three specimens of this kind of coal were analysed : 



1, from the Rushes Colliery, Queen's County; 



2, „ the Pollough Vein, Castlecomer, Co. Kilkenny; 



3, „ the Sweet Vein, Kanturk, County Cork. 



The anthracites have no tendency to froth or cake in 

 cokeing. They give off little or no inflammable gas on being 

 ignited, but usually the masses break up quite small, espe- 

 cially if the heat be suddenly applied. The ashes are almost 

 always red, owing to peroxide of iron remaining after the 

 combustion of the iron pyrites, which the anthracite gene- 

 rally contains. 



Rushes anthracite — 0.375 grammes gave : 



Water 0.118 



Carbonic acid .... 1.238 

 Light red ashes . . . 0.014 

 The Pollough anthracite, 0.364 grammes gave : 



Water 0.079 



Carbonic acid .... 1.086 

 Brown ashes .... 0.036 

 The Sweet Vein anthracite — 0.293 grammes gave : 



Water 0.098 



Carbonic acid .... 0.928 

 . 0.305 gave . . . 0.026 ashes, white. 

 These coals consisted, therefore, of: 



Rushes. Pollough. Sweet Vein. 



Carbon .... 90.04 81.36 86.37 



Hydrogen . . . 3.50 2.41 3.71 



Oxygen . . . 2.73 6.34 1.40 



Ashes .... 3.73 9.89 8.52 



100.00 100.00 100.00 



