82 Unversity Geological Survey of Kansas. 
learned that the name was previously occupied, as Prosser* 
had used it in connection with a division of the Silurian in the 
state of New York. 
As the name Fort Scott is just as appropriate on account of 
the rocks being so well exposed in the environs of the city by 
that name, and partly on account of Swallow having proposed 
the name for the upper bed, the term is here adopted to replace 
the name Oswego previously used by this Survey. 
Thickness.—The Fort Scott limestone consists of two mem- 
bers, an upper and lower, which are separated by a thin but 
persistent shale-bed from 7 to 8 feet in thickness. The upper 
member averages from 10 to 12 feet in thickness, and is quite 
uniform in character and thickness wherever found in the 
state. The lower member is from 5 to 6 feet thick at Fort 
Scott and reaches a thickness of 18 feet at Girard, as shown 
by the well records at that place, and is quite variable in 
character wherever observed. The upper member is divided 
into different layers, so that it is well stratified wherever 
found. The lower one consists of one layer only at Fort Scott, 
is quite impure, and on that account is used for making hy- 
draulic or natural cement. For a more detailed account, ref- 
erence should be made to page 40, volume I, of this series of 
reports. | 
Area.—The Fort Scott limestone covers a narrow band or 
zone from the south side of the state, near Chetopa and Os- 
wego, northeastward to the east state line in the vicinity of 
Fort Scott and Fulton. In places there is a marked dip slope 
on the top of the limestone from which the overlying forma- 
tions have been eroded a number of miles back to the west. 
Elsewhere the zone narrows by the overlying limestone ap- 
proaching the eastern limits of the Fort Scott limestone. Ref- 
erence should be made in this connection to the general aie 
map, plate VIIa, VIIb, VIlc. . 
Fauna of the Fort Scott Limestone.—FKor list of fossils from 
the Fort Scott limestone see Doctor Beede’s chart, plate XLII. 
Labette Shales.12 
The name Labette shales is applied to a bed of shales lying 
immediately above the Fort Scott limestone. The term was 
* Prosser, Prof. Chas. §S.: Bul. Geol. Soc. Amer., vol. Iv, pp. 100, 108, 116, 
1892. 
12. Haworth, Prof. E.: Univ. Geol. Surv. of Kan., vol. 111, p. 100. Lawrence,. 
1898. 
