144 



AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (WIS.) 



* Unconformability between Huronian and Laurentian finely shown at Penokee. 



NOTE. Where several formations are given it is to be understood that they occur in the 

 vicinity, not necessarily immediately at the station. Also, that where the drift effectually conceals 

 the underlying formations, they are not usually given, though in almost all cases definitely known. 



