STEVENSON— INTERRELATIONS OF THE FOSSIL FUELS. 187 



2428 C 

 5779 E 

 5782 E 

 5782 F 

 5784 F 

 2427 G 



Water. 



38.45 

 34-50 

 35-72 

 35-40 

 43-51 

 29.78 



Ash. 



5 -69 

 7-51 

 8.86 

 5-64 

 6.39 

 6.56 



No ultimate analyses of these samples were made, but the proximate 

 analyses suffice to show the great variability in conditions under 

 which the coals accumulated ; there is notable difference in ash ; in 

 the two analyses of coal bed F one finds a difference of more than 

 14 per cent, of volatile. 



The coals of the state of Washington have great economic im- 

 portance and a great mass of analyses is available. In that state 

 one finds all grades of coal from peat-like material to graphitic 

 anthracite within the Eocene column ; at many localities the coals 

 yield coke of excellent quality. One may select only a few of the 

 analyses as illustrating the variations. In King county the water is 

 low, rarely exceeding 12, usually below 9 and in a great number 

 of cases is below 6 per cent, in the freshly mined coal. The ash is 

 high, not often below 12 and very frequently above 20 per cent, in 

 the dry coal. The first five analyses, which follow, are from the 

 several beds near Issaquah and are of subbituminous coal; the sixth 

 is bituminous and the seventh is of coking coal from Bayne. 



Water. 



Ash. 



Fixed 

 Carbon. 



C. 



OandN. 



8544 I - . 

 8445 11. 



11736 III 



11737 IV, 

 8543 V. 



9114 



9485 . • ■ ■ 



14.2 

 13.8 

 15-9 

 16.S 

 15-I 

 4-9 

 4.2 



13.59 

 20.53 

 11.4 

 24.4 

 13-36 

 4-74 

 11.62 



40.9 



47-3 

 48.4 

 52.4 

 39-9 

 46.2 



38.3 



59-1 

 52-7 

 51-6 

 47-6 

 60.1 

 53-8 

 61.7 



76.51 

 74-77 



75-52 

 79.96 

 81.52 



5.66 

 6.00 



5-41 

 5-86 

 5-65 



17-34 

 18.51 



17-55 

 13-67 

 12.30 



At Ronald in Kittitas county, a coking coal is found with composi- 

 tion dift'ering very slightly from that of the coal at Bayne. In Pierce 

 county, coking coals are mined at many places with 3 to 5 per cent, 

 of water in the fresh coal ; the ash is rather high in some of them, 



