MICHIGAN. 



115 



Michigan. 1 



1. This chapter was prepared for this work by Prof. Alexander Winchell, L L. D., of the 

 Syracuse University, former Director of the Geological Survey of Michigan. 



2. The rocky formations of the Lower Peninsula are deeply and generally covered by drift. In 

 all the western half of the State, south of Little Traverse Bay, no good characteristic exposures 

 exist, save in Kent county and near Holland in Ottawa county. Hence in most cases our knowledge 

 of the underlying rocks is only a matter of inference. A. W. 



