US. GEOLOGICAL SURVEY 



MONOGRAPH XXVII PL. XX 



COAE SEAMS OF THE DENVER BASIN. 



Figures A - E, LAFAYETTE FIELD Figures F - L, LOUISVILLE FIELD 

 Figure M ALLEN-BOND „ Figure N ERD2 FDZLD „ 



Figures - P, FOOTHILL COALS 



iLATE SANDSTONE 



