CONTENTS. 
Page. 
Introduction,  by  M.  R.  Campbell 5 
The  Sentinel  Butte  lignite  field,  North  Dakota  and  Montana,  by  A.  G.  Leonard 
and  C.  D.  Smith " 15 
The  Miles  City  coal  field,  Montana,  by  A.  J.  Collier  and  C.  D.  Smith 36 
The  Bull  Mountain  coal  field,  Montana,  by  L.  H.  Woolsey ...  62 
Coal  near  the  Crazy  Mountains,  Mont. ,  by  R.  W.  Stone 78 
The  Red  Lodge  coal  field,  Montana,  by  E.  G.  Woodruff 92 
The  Lewistown  coal  field,  Montana,  by  W.  R.  Calvert . . 108 
The  Sheridan  coal  field,  Wyoming,  by  J.  A.  Taff 123 
The  Glenrock  coal  field,  Wyoming,  by  E.  W.  Shaw 151 
Coal  fields  of  the  northeast  side  of  the  Bighorn  Basin,  Wyoming,  and  of  Bridger, 
Mont.,  by  C.  W.  Washburne 165 
Coal  fields  of  the  southwest  side  of  the  Bighorn  Basin,  Wyoming,  by  E.  G. 
Woodruff 200 
The  eastern  part  of  the  Great  Divide  Basin  coal  field,  Wyoming,  by  E.  E. 
Smith . 220 
The  western  part  of  the  Little  Snake  River  coal  field,  Wyoming,  by  M.  W. 
Ball '. 243 
The  northern  part  of  the  Rock  Springs  coal  field,  Sweetwater  County,  Wyo., 
by  A.  R.  Schultz 256 
Coal  fields  of  northwestern  Colorado  and  northeastern  Utah,  by  H.  S.  Gale 283 
The  Grand  Mesa  coal  field,  Colorado,  by  W.  T.  Lee — 316 
The  coal  field  between  Gallina  and  Raton  Spring,  N.  Mex.,  in  the  San  Juan 
coal  region,  by  J.  H.  Gardner. 335 
The  coal  field  between  Durango,  Colo.,  and  Monero,  N.  Mex.,  by  J.  H.  Gardner.  352 
The  coal  field  between  Gallup  and  San  Mateo,  N.  Mex.,  by  J.  H.  Gardner  ...  364 
The  Harmony,  Colob,  and  Kanab  coal  fields,  southern  Utah,  by  G.  B.  Rich- 
ardson    379 
The  Rogue  River  valley  coal  field,  Oregon,  by  J.  S.  Diller 401 
A  coal  prospect  on  Willow  Creek,  Morrow  County,  Oreg. ,  by  W.  C.  Mendenhall .  406 
The  Pocket  coal  district,  Virginia,  in  the  Little  Black  Mountain  coal  field,  by 
C.  A.  Fisher 409 
Classified  list  of  papers  dealing  with  coal,  coke,  lignite,  and  peat,  contained  in 
publications  of  the  United  States  Geological  Survey,  except  those  on  Alaska, 
by  W.  T.  Lee  and  J.  M.  Nickles 419 
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