-MM The American Geologist. September, ism 
A siDgle fish tooth was picked up on the slope and probably came 
from the top, as it is identical with the teeth from the shales immedi- 
ately under the Lithographic limestone at Louisiana, Mo. 
In Mr. Greger's collection we saw a small pygidium of what seems to 
be a Proetus from the same shale. 
Of the ten above mentioned Stropheodontm described by Prof. 
Swallow from the locality, there arc, perhaps, but four or live good 
species, as a full collection of these fossils shows. 
At one point we saw resting under the shales what appeared to be 
the Saccharoidal sandstone, but a disturbance of the strata at that 
point rendered a decision unsatisfactory. 
A gentle slope above the entire exposure seems to indicate upper 
shales, giving a much greater depth to the beds than that observed. 
The Burlington limestone, doubtless, overlies the Hamilton of Calla- 
way county, but we did not see the contact. 
At other exposures which we did not have time to visit, Mr. Greger 
found limestone over the shales, carrying Favosites hamiltonensis, a 
large and beautiful 6piny Zaphrentis (t), strombodes or Cyathophyl- 
lum, Spirifera fornacula (?), an Athyris, a Terebratula (?), a Eiiom- 
2jhalus, Stropheodonta sp.? and Atrypa reticularis. 
A very large, fiat Stropheodonta came from another exposure of 
shales. 
A careful search among these shales and limestones will bring to 
light fully fifty species of fossils, many of them new to science. 
As to the area covered by the Hamilton of central Missouri, we can 
only conjecture, but are inclined to think that exposures will be met 
with in adjoining counties, giving a fauna quite as rich as those from 
the same horizon in Iowa and Illinois. Starting from the Coal Meas- 
ures which are the surface rocks at Fulton, Mr. Greger measured all 
the outcrops along a line due east for a distance of four miles, and, 
with his permission, we use his observations and measurements. 
Beneath the Coal Measures at Fulton, he found fifteen feet of ferru- 
ginous sandstone, between which and seventy-five feet of conglomerate 
is a soft, light yellow clay, twelve feet in depth. 
A gray limestone twelve feet thick and a brown-red limerock. four 
feet deep, which Mr. Greger supposes to be Burlington, underlies the 
conglomerate. 
Three feet of yellow sandy shale without fossils separate the Burling- 
ton from the Hamilton. 
Of the Hamilton itself he makes out the following members: 
Gray limestone (fossiliferous), 5 feet. 
Soft brown fossiliferous shale, 10 inches. 
Blue shaly limestone with fossils, (» feet. 
Brown shale, with Stropheodonta. Atrypa, etc., 8 feet. 
Lighter shale with Orthis iowensis,Cyrtina, Spirifera. etc., 3 feet. 
Blue-gray limestone, shaly, with fossils, 8 feet to edge of drift in 
Crow's Fork creek. 
Our guide and companion on the trip to Snyder creek, Mr. D. K. 
