532 





Rushes. 



Pollough. 



Sweet Vein. 



Volatile matter . 



. 9.85 



10.40 



10.35 



Pure coke . 



. 8G.42 



79.71 



81.13 



Ashes . . . 



. 3.73 



9.89 



8.52 



100.00 100.00 lOO.CO 



The result of ignition witii litharge was, that 



One part of Rushes coal gave . 31.8 of lead. 



Pollough 26.7 „ 



Sweet Vein 29.0 „ 



Hence they correspond respectively. 



100 parts of Rushes to . . 93.5 of pure carbon. 

 100 „ Pollough . . 73.5 

 100 „ Sweet Vein . 85.3 „ 



And in average 100 parts of Irish anthracite may be consi- 

 dered to possess a calorific power equal to 84 parts of pure 

 carbon. 



II. COAL OF THE CONNAUGHT BASIN. 



The coals examined were all from the collieries of Brah- 

 lieve mountain, forming the western division of the Lough 

 Allen coal field. The specimens were furnished through 

 the kindness of Colonel Jones, member of the Shannon Com- 

 mission. The results were as follow : 



AUGHABEHY COAL. 



A rich, black coal, easily broken. Sp. gr. 1.274. When 

 heated, it gives off a good deal of inflammable gas, and leaves 

 a hght grey, porous, coherent coke. 

 Its elementary analysis was effected : 

 0.472 grammes gave: 



Carbonic acid 1.379 grammes. 



Water ........ 0.265 „ 



0,921 grammes gave of white ashes, 0.099, or 10.75 

 per cent. 



