burrows.]       BARNESBORO-PATTON  COAL  FIELD,   PENNSYLVANIA.        309 
Section  of  Lower  Kittanning  coal  at  Bakerton,  Pa. 
Sandstone  and  shale  roof.                                                                         Ft.  In. 
Coal : 3  0 
Shale 0  3 
Coal' 0  8 
Shale 0  4 
Coal 1  3 
Shale  and  fire-clay  floor. 
Total 5     6 
Lower  Kittanning  coal  at  Bakerton,  Pa. 
Sandstone  roof.  Ft.  In. 
Shale 1  2 
-     Coal 3  2 
Shale 0  5 
Coal 0  5 
Fire  clay 0  4 
Coal 1  2 
Fire-clay  floor. 
Total 6    8 
Section  of  Lower  Kittanning  coal  near  Elmora,  Pa. 
Sandstone  roof.  Ft.  In. 
Coal 3  0 
Shale 0  4 
Coal 0  6 
Shale 0  4 
Coal 1  2 
Total 5    4 
Quality  of  the  coal. — The  Lower  Kittanning  coal  is  generally  regarded 
as  a  very  superior  coal  for  steam  purposes,  and  this  opinion  seems  to  be 
borne  out  by  an  analysis  recently  made  in  the  chemical  laboratory  of 
the  United  States  Geological  Survey  by  Mr.  W.  T.  Schaller.  The  sample 
from  which  this  analysis  was  made  was  cut  from  a  working  face  of 
Sterling  No.  3  mine,  at  Bakerton,  and  is  of  the  entire  bed,  exclusive  of 
partings.     This  analysis  shows  the  following  composition: 
Analysis  of  Lower  Kittanning  coal  from  Bakerton,  Pa. 
Per  cent. 
Moisture 0.  43 
Volatile  hydrocarbons 23.  24 
Fixed  carbon 70.  93 
Ash :.     5.40 
Sulphur 1.12 
Color  of  ash White. 
The  Lower  Kittanning  coal  is  coked  only  at  Mitchell's  mines,  but  as 
it  is  mixed  with  Lower  Freeport  coal,  the  results  obtained  there  are 
of  little  value  in  determining  its  coking  properties. 
