Piatt.] U^ [Feb. 7. 



Water 4. 1 30 



Volatile Matter 15.270 



Fixed ( !arbon 67.362 



Sulphur 523 



A.sh 12.715 



Color of ash, reddish-gray. 



100.000 



On drying at 225° the Coal loses 4.13 % 



" " 245° " " same. 



" " 260° " " 4.19% 



" :'»40° " " 4.50 % 



" 4G0° " " 4.69 % 



A.t a dull red heat the Coal loses 12.59 % 



But in all these experiments the water re-absorbed is about the same ; 

 that is, the coal re-absorbs 2.48 parts of water. Irrespective, therefore, of 

 the amount of water, &c., driven off by heat, the portion re-absorbed is 

 practically constant ; anil this property is not destroyed, even after all the 

 volatile matter is driven off." 



No. 3. Coal from opening one and a half miles east of Bernice, Sullivan 

 county, Pennsylvania. Top bench of coal. 



"The coal has a dull dead lustre; it is very soft and crumbling, and 

 has a somewhat shaly appearance with laminated structure. The gases 

 burn with a feebty luminous flame, but the coal does not coke. 



Water 7.930 



Volatile Matter 21.410 



Fixed Carhon 54.099 



Sulphur 551 



Ash 16.010 



Color of ash, cream. 



100.000 



No. 4. Sullivan count}-, one mile south of Laporte. From S. Hall's 

 drift. 



" The coal has a deep black dull lustre ; it is rather friable ; contains some 

 slate. It does not show the slightest tendency to form a coherent coke; 

 the volatile matter burns with Si feebly luminous flame. The coal acts 

 generally in the same way as that from the Bernice lower coal bed. 



Water 6.830 



Volatile Matter 21.930 



Fixed Carbon 55.413 



Sulphur 387 



Ash 15.440 



Color of ash, red. 



100.000 



