120         CONTRIBUTIONS  TO   ECONOMIC   GEOLOGY,  1907,   PART  II. 
Analyses  of  coal  samples  from  Lewistown  field,  Montana. 
[F.  M.  Stanton,  chemist  in  charge.] 
Coal 
Sage 
Creek. 
Buffalo  Creek. 
Rock  Creek. 
Labo 
5290 
5265 
5267 
5266 
5264 
5273 
5274 
Samj 
1 
„ 
Ca 
Bi 
Loss 
tie  as  received: 
9.95 
24.87 
44.22 
20.96 
5.51 
14.44 
28.80 
45.65 
11.11 
4.08 
17.03 
27.34 
43.83 
11.80 
4.14 
4.98 
51.73 
.62 
26.73 
4,941 
8,894 
15.72 
29.64 
43.81 
10.83 
2.81 
16.86 
30. 23 
45.60 
7.31 
3.03 
5.62 
58.27 
.67 
25.10 
5,726 
10,307 
13.90 
26.25 
41.84 
18.01 
6.05 
9.18 
29.69 
43.31 
fAsh                         
17.82 
HSulphur  ..             
9.39 
4,937 
8,887 
5,381 
9,686 
5,371 
9,668 
3.00 
7.30 
9.00 
6.50 
8.20 
6.10 
1.90 
Air-d 
ried  sample: 
7.16 
25.64 
45.59 
21.61 
5.68 
7.70 
31.07 
49.25 
11.98 
4.40 
8.82 
30.04 
48.17 
12.97 
4.55 
4.37 
56.85 
.68 
20.58 
5,430 
9,774 
9.86 
31.70 
46.86 
11.58 
3.01 
9.43 
32.93 
49.68 
7.96 
3.30 
5.13 
63.48 
.73 
19.40 
6,237 
11,228 
8.31 
27.95 
44.56 
19.18 
6.43 
7.42 
X 
30.27 
44.15 
Ph 
fAsh                                        
18.16 
9.57 
+j  1 
P 
Ca 
5,090 
9,162 
5,730 
10,315 
5,475 
Bi 
9,855 
Coal  district. 
Warm  Spring 
Creek. 
McDonald  Creek. 
Laboratory  No. 
Sample  as  received : 
{Moisture 
Volatile  matter 
Fixed  carbon 
fAsh 
I\Sulphur 
Hydrogen 
Carbon 
Nitrogen 
Oxygen 
Calories 
British  thermal  units. 
5472 
2.84 
27.35 
54.29 
15.52 
4.87 
6,512 
11,722 
Loss  of  moisture  on  air  drying I      1. 60 
Air-dried  sample: 
{Moisture 
Volatile  matter. 
Fixed  carbon. . . 
fAsh 
{\Sulphur 
Hydrogen 
Carbon 
Nitrogen 
Oxygen 
Calories 6,618 
British  thermal  units 11,912 
1.26 
27.80 
55.17 
15.77 
4.95 
5475 
5272 
28.61 
42.65 
21.85 
5.48 
5,229 
9,412 
15.35 
28.27 
48.08 
8.30 
4.53 
5.42 
61.15 
.71 
19.89 
5,897 
10,615 
2.80 
8.20 
4.21 
29.43 
43.88 
22.48 
5.64 
5,379 
9,683 
7.79 
30.80 
52.37 
9.04 
4.94 
4.91 
66.61 
.77 
13.73 
6,424 
11,563 
5289         5295         5294 
18.88 
25.18 
48.34 
7.60 
2.72 
5.19 
57.31 
.66 
26.52 
5,417 
9,751 
6.40 
13.33 
26.90 
51.65 
8.12 
2.91 
4.79 
61.23 
.70 
22.25 
5,787 
10,417 
11.35 
29.74 
46.56 
12.35 
4.48 
5.02 
58.91 
.82 
18.42 
5,841 
10,514 
18.56 
24.59 
48.36 
8.49 
3.72 
5,505 
9,909 
3.10 
8.51 
30.69 
48.05 
12.75 
4.62 
4.83 
60.79 
.85 
16.16 
6,028 
10,850 
9.91 
27.20 
53.50 
9.39 
4.12 
6,090 
10,961 
