90 STEVENSON 



Hydrogen 4.05 



Oxygen and Nitrogen 11.90 



Ash 12.03 



The ash is higher than Mr. McCreath's analysis because the 

 latter was made from the lump coal while the coal for this was 

 fine coal. The nitrogen is present in small proportion, consid- 

 erably less than i per cent, and it was not determined separately. 



The Fangen coal from Spitzbergen, wholly non-caking, is 

 attacked by caustic potash very energetically even in the cold. 

 For comparison, several non-caking coals were tested. The 

 lignitic coal of Carbon, Wyoming, Laramie in age, resembles in 

 color the upper bench but in structure the lower bench of the 

 Fangen bed ; that from Rock Springs, Wyoming, also of Lar- 

 amie age, has a fracture like cannel, and, unlike the Carbon 

 coal, shows no mineral charcoal. These coals are attacked 

 slowly in the cold but very rapidly at the boiling temperature. 

 A non-caking coal from Des Moines, Iowa, of Coal Measures 

 age, is attacked notably in the cold and almost as rapidly as the 

 Fangen coal at boiling temperature. This coal is very like that 

 from Carbon, but has more mineral charcoal and contains up- 

 wards of 6 per cent, of water. 



A coal from Savanna, Indian territory, of Coal Measure age, 

 and yielding an inferior coke, is attacked slowly in the cold and 

 the solution becomes distinctly tinted after prolonged boiling. 



Several caking coals were tested ; they are from Canon City, 

 Colorado, and Madrid, New Mexico, of Fox Hills age ; Stark- 

 ville, Colorado, of Laramie ; Vancouver's island, of Upper 

 Cretaceous ; Leavenworth, Kansas, Wolf county, Kentucky, 

 Fayette and Westmoreland counties, Pennsylvania, of Coal 

 Measures. Not one of these caking coals caused the slightest 

 discoloration of the solution after ten minutes of boiling. 



In both classes are coals of Carboniferous and Cretaceous 

 age, coals made under similar conditions of cover and similar 

 relations to disturbing agencies, so that one is led to suspect 

 that the character of the coal was determined very soon after 

 burial. 



