A Regional Interpretation of the Stratigraphic Relations of the
Sub-carboniferous group based on new
and detailed field examinations.
BY
CHARLES BUTTS
ASSISTANT GEOLOGIST
PREPARED IN CO-OPERATION WITH THE
UNITED STATES GEOLOGICAL SURVEY
Illustrated with Ninety-three Photographs, Maps and Diagrams
THE KENTUCKY GEOLOGICAL SURVEY
1922
digital version by Don Chesnut ©2008
In reviewing the manuscript, I noticed that the typesetter's or printer's proofs had never been edited or corrected. There were very many spelling errors in the original publication. I corrected some of these in order to avoid reader confusion. In this regards, this version is a sort of revision.