U. S. GEOLOGICAL SURVEY 



MONOGRAPH XXXII PART II PL. LXVI 





lc 



■#' 



2a 



2b 



3c 



WliF 



2c 



3d 



7a 



4a 4b 



7b 



4c 







_^_ 



10c 



I Ob 



DEVONIAN AND LOWER CARBONIFEROUS 

 THREE FORKS AND MADISON LIMESTONES 



THE HEUOTYPE PRINTING CO.. BOSTON 



