ADAPTABILITY TO WASHING. 
31 
Determinations of ash and sulphur in coal samples variously treated — Continued. 
INDIANA NO. 4. 
[Unwashed coal (boiler-test sample, NO. 1892) — ash, 15.63; sulphur, 2.74.] 
Portion. 
Ash. 
Sulphur. 
Compared with 
original sample. 
Ash. 
Sulphur. 
| inch to ^V inch 
81.9 
61.8 
11.9 
8.9 
5.89 
17. 50 
69.29 
1.82 
3.54 
7.01 
3.66 
2.10 
6.17 
1 12 
1.35 to 1.65 
42 
62 
s 1 ,, inch and finer 
17.5 
5.3 
12.2 
.83 
2.88 
.15 
23.83 
8. 26 
7. 69 
2.84 
2.26 
2. 26 
.35 
Washed at l^-inch size: 
15.64 
2.66 

No. 2 

INDIANA NO. 6. 
[Unwashed coal (boiler-test sample, No. 1928)— ash, 13.54; sulphur, 4.83.] 
£ inch to 2 V inch 
76. 1 
56.2 
13.6 
6.7 
6.63 
19.58 
54. 89 
2.92 
5.54 
13.75 
3.73 
2.66 
3.68 
1.64 
1.35 to 1.65 
.75 
.91 
23.2 
6.9 
16.3 
Very fine, decanted a 
.93 
2.79 
.33 
Kemainder 
17.10 
10.34 
10.98 
10.06 
5.19 
3.67 
3.94 
3.73 
.85 
Washed at lj-inch size: 
Sample No. 1 
13.79 
4.48 
No. 2 
No. 3 
INDIANA NO. 7 A. 
[Unwashed coal (boiler-test sample 
No. 1939) 
—ash, 9.03 
; sulphur, 
3.75.] 
91.1 
86.7 
3.6 
3.4 
Lighter than 1.35 . . 
6.69 
26.23 
55.84 
3.05 
4.39 
23.48 
5.80 
.94 
1.90 
2.64 
1.35 to 1.65 
.16 
Heavier than 1.65 
.80 
8.6 
5.4 
3.2 
.49 
.55 
.20 
17.13 
8.94 
8.18 
4.48 
3.33 
3.36 
.14 
Washed at l^-inch size: 
9.68 
3.94 
No. 2. 
INDIANA NO. 9 B. 
[Unwashed coal (boiler-test sample, No. 2035)— ash, 10.98; sulphur, 3.02.] 
78.4 
64.2 
7.3 
3.2 
8.04 
25.90 
60.75 
2.30 
4.60 
16.70 
5.16 
1.89 
1.94 
1.48 
1.35 to 1.65 
.33 
Heavier than 1.65 
.52 
21.3 
8.8 
12.5 
.97 
2.48 
.26 
19.87 
9.22 
8.54 
4.24 
2.91 
2.69 
.53 
Washed at li-inch size: 
12.44 
3.12 
No 2 
a Estimated from results on unwashed coal. 
