ee 
~ 
s, 
y 
Without undertaking to mention in detail all the intermediate 
laces where this rock is known to occur, we pass at once to 
~H. Englemann at an elevation of about 1000 
. Missouri, at Fort Leavenworth. Here Dr. Englemann de- 
Scribes it as “a coarse grained, friable dark brown ferruginous 
ay and very compact white and light colored shaly sand- 
Near this locality he saw it overlaid by Cretaceous oR the 
Dien ame 
