NEW CAMBRIAN HORIZON IN WISCONSIN 145 



six formations by (Jlrich, one of which is the Franconia. H is 

 possible that the Sparta beds may be the equivalenl of the Fran- 

 conia formation, but since qo description of the Franconia beds 

 has been published, it is impossible to make a definite statemenl 

 to this effect. The topographic position of the Franconia ap 

 pears to correspond with that of the Sparta member. 



Winchell 12 recognized the Saint Lawrence and associated 

 shaly beds as having- a total thickness of 200 feet. These beds 

 are probably the equivalent of the Sparta member. 



Department op Geology, 

 State University of Iowa. 



-Final Rept. of the Geo!, and Nat. Hist. Survey of Minnesota, Vol |[, p. 

 XXII. 



10 



