14 
The American Geologist. 
July, 189.S 
Warsaw is clearly the lower part of the St. Louis limestone." 
Prof. Williams' classification of the strata of the Mississip- 
pian series is expressed in tabular form as follows:* 
Genevieve group. 
Mississippian I Osage group. 
Series. » 
Chouteau group. 
( Chester. 
\ St. Louis. 
( Warsaw, (in part). 
\ Keokuk. 
/ Burlington. 
( Chouteau limestone and Ver- 
micular and Lithographic 
J formations as proposed by 
I G. C. Broadhead, in the fol- 
\ lowing report. 
In this way the name Osage was established in 1891. In a 
paperf bearing the date of June, 1892, Mr. Keyes accepted 
witJiojit question and with no intimation that the name was 
used "provisionally," the name Osage and used it in a classi- 
fication of the strata of the Mississippian section, giving it the 
following definition : 
Osage Limestones. 
Definition and general Relations. — From a purely paleontological 
standpoint, the advisability of including the Burlington and Keokuk 
limestones under a single name was pointed out several years ago. 
For this long needed term Williams has proposed the name "Osage." 
At that time nothing was said about the name being pro- 
posed under the "misconception" that the Burlington and 
Keokuk faunas were mingled in southwestern Missouri, — a 
"misconception," which, if it ever did exist, would have no 
bearing on the subject. Neither did the supposed fact that 
Williams had entirely excluded the "Warsaw" from his Osage 
group seem to be a serious objection to Mr. Keyes. at this 
time, against using the name. The following tabulation of his 
classification of these strata is given by Mr. Keyes in this 
paper: 
*U. S. Geol. Surv., Bull. 80, p. 169. 1891. 
tBull. Geol. See. Am., vol. 3. P- 283. 
