272                CONTRIBUTIONS    TO    ECONOMIC    GEOLOGY,   1903.  [bull. 225. 
All  through  this  locality  there  appear  to  be  two  coals,  of  which  in 
sonic  cases  the  upper  is  the  thicker,  in  other  cases  the  lower;  in  some 
cases  the  two  coals  are  of  about  equal  thickness,  as  in  the  following 
section : 
Section  of  Harlan  coals  on  Hances  Ridge. 
Shale  roof.                                                                                    Ft.    In.     Ft.  In. 
Upper  coal. 
Coal -----  3     3£ 
Clay 1     0 
Coal 0     3        4  6| 
Shale,  brown - 5  0 
Shale,  light  drab 10  0 
Lower  coal. 
Coal 2     1 
Clay - 0     H 
Coal: 1     9        3  11 J 
Between  Fuckett  and  Wallin  creeks  the  coals  correlated  as  Harlan 
usually  run  between  2  and  3  feet  thick. 
The  following  sections  are  typical  of  this  coal  through  the  region 
of  the  three  forks  of  Cumberland  River: 
Section  of  Harlan  coal,  head  of  Puckett  Creek. 
Shale  roof.                                                                                                     Ft.  In. 
Coal 3  0 
Coal,  bony 0  1 
Coal * 0  11 
Total 4  0 
Section  of  Harlan  coal,  upper  Martins  Fork. 
Clay-shale  roof.                                                                                         Ft.  In. 
*  Coal 0  9  J 
Clay 1  4 
Coal 2  2 
Coal,  cannel 1  2 
Total 5  5  i 
Section  of  Harlan  coal  on  Catron  Creek. 
Ft.  In. 
Coal,  2  feet 2  7 
Clay,  2  inches 0  1 
( !<  >al,  bottom  cannel 2  0 
Clay 0  8 
Coal 1  2 
Total 6  6. 
Section  of  Harlan  coal  in  Cray  Knob. 
Shale  roof.                                                                                              Ft.  In. 
Coal 2  6 
Clay 0  2 
Coal 1  5 
Total 4  i 
