CHEMICAL REPORT.



AVERAGE COMPOSITION OF THE COALS FROM THE NORTHEASTERN KEN-
                           TUCKY COAL FIELD.

                  Number of  Specific  Volatile  Fixed car- Per cent. of Per cent. of
    COUNTIES.      samples   gravity.combustible bon in the  ash.    sulphur.
                   analyzed.          matters.  coke.


Boyd. . . . . . .       13      1.337    33-43      54-35      8.46      2.292
Carter.i6                       1.331    33-39      53.45      8.17      i. 886
Greenup.. . . . .        14     1 375    34.50     52.20      9.37      3. X65
Lawrence. . . . .        6      1.326    36.27      53.85     6.86       1.285
Menifee.. . . . .        2      1.319    33.55     53.42      10.36      2- 544

General average..      51    1.3376     34.23     53.45      8.62      2.234


     AVERAGE COMPOSITION IN THE SOUTHWESTERN COAL FIELD.

                   Number    Specific  Volatile   Fixed  Per cent. of Per cent. G
    COUNTIES.     analyzed.  gravity. combustiblecarbon.     ash.    sulphur.
                                       matters.


Butler... . . .          1.      .378    30.66     54.94      11.00     2.544
Edmonson..               8     1.360     34.01     52.34      10.56     3.312
Grayson.                 8     1.385     3117     49.78      14.38     2 .083
Hopkins                  2     1.385     32-95     52-55      11.20     5.019
Mahlenburg . . .        11     1.312     36.42     53.26      6.74       2.949
Ohio...3......           3     1.362     34.90     53-77      8 i6       3.103

General average.       33    1.3636    ,33.70     52.77     10.34      3.166

 By leving out the exceptional ash of No. 19, the average is-..
tWithout No. x  hs avenge would toe- o-36.
, This is the ave-ge of fifteen of the coats only.
I By avingout the exceptiona ash of No. t454, the average would heb _x..t.

AVERAGE COMPOSITION OF THE SELECTED COALS FROM NEIGHBORING
                                  STATES.

                   Number    Specific  Volatile  Fixed car- Per cent. of Per cent. of
     STATES.      analyzed.  gravity. combustiblebon in the  ash.    sulphur.
                                       matters.   coke.


Ohio .. . . . . .        7      1.327    34- 51     55.17     6.43       1.494
Illinos      ...  . . . .        2     1X310     31.95     59.o6      5.96       1.924
Indiana.. . . . .        3     1.313     35.93     54.24      7. 23      1946

General average.       12     1. 317    34-13     56.12      6.5 4     1.768


  This comparison is more or less imperfect, because the sam-
ples, which were too few in number to make it complete, were
not averaged with special reference to it. Yet it measurably
corroborates opinions held by geologists and others in regard
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