408 TRANS. OF THE ACAD. OF SCIENCE. 
mouth of Establishment cs extending to within a couple 
of miles of Ste. Geneviéve. Two miles from Ste. 
on the p road, it is seen n directly under the oolitie beds of 
the St. Louis Limestone, and it is also well displayed on Ga 
bouri Creek, three and a half miles from Ste. a 
where it reposes on a Encrinital Limestone. Its thickness 
is from 100 to 150 fee 
The Encrinital ra Sa which terminates the Carboni 
erous, presents the same characters as in other of the 
It out on  Gaboudi feud iullew shove did onal and on 
the plank road four and a half miles from Ste. 
Mr. W. Hough also observed it on Saline Creek, about three 
miles above its confluence, and on the Aux Vases near the 
point where the old telegraph road crosses it. 
CHEMUNG GRovP. 
are ta well marked oe of this group i in 
Ste. Gen ds to the 
eviéve, the superior of which correspon 
Rote eau Limestone sie the inferior, perhaps, to the Yom 
: "Shale. 4 
"The Chouteau Limestone is made up of rather ‘thin 
of buff and contal 
ravine a short distance from the Mississippi Lt? 
se reg t.” On Gabon 8. he where we have hickness ® 
‘ Gabouri Creek, five miles from. Ste, oe? 
