SO-CALLED CRETACEOUS DEPOSITS IN MINNESOTA 691 
of Cretaceous strata. Other supposed Cretaceous rocks are very 
evidently not such. With the exception perhaps of the half 
square mile in Goodhue county, no areas should be indicated on 
the map in southeastern Minnesota either as known or probable 
Cretaceous. At, or a little beyond, the western border of the 
region herein considered, the first Cretaceous begins, z. é., near 
New Ulm. 
FREDERICK W. SARDESON. 
UNIVERSITY OF MINNESOTA, 
Minneapolis, Oct. 17, 1808. 
