232 The American Geologist. April, isas 
that were to be made, the paper was withdrawn after the page 
proofs had been read, and it was never pubHshel, as the ma- 
terial was largely incorporated in another and more extensive 
memoir on the same subject which was to appear at the same 
time. The printed, though unpublished Williams' notes are 
cf interest in this connection on account c^f containing a clearer 
expression of the real meaning of the term Ozark (Osage) 
than is found anywhere else. It is as follows: 
"The Qzark groui) (i>. of my table) is a group proposed to include 
the formations heretofore described as Encrinital limestone, IJurlington 
limestone, Keokuk group, and their equivalents in Missouri, Illinois and 
Iowa, and part, if not all, of the Siliceous group of Tennessee, all of the 
faunas of which indicate a close paleontologic relationship. It is pos- 
sible that some of the formations heretofore referred to the Warsaw group 
may more properly belong in this group. 
The name Ozark group is suggested by the fact of the prominent de- 
veh)pment of the formations constituting the group on the southern 
and western margins of the Ozark uplift." 
Before the publication of the name Ozark for the lUirling- 
ton and Keokuk it w'as learned that the name Ozark was to be 
used by Prof. Broadhead in another connection and that 
the paper announcing the fact was already in press. At the 
suggestion of the latter the term Osage was substituted. 
While the matter was pending in Missouri Prof. Will- 
iams also made a communication to the Arkansas Geological 
Survey on the same subject, using the name Osage. Subse- 
quent and more exact correlations made in .Vrkansas show 
tnat the formations included* in the "Osage group" were cpiite 
different from those included in the same group in Missouri, 
and embraced also a mmiber of strata of imcertain age, some 
of which are now known to form a part of the Kaskaskia. Al- 
though later investigation showed clearly that a number of 
formations that do not properly belong there were included 
in the Osage, there is no definite intimation that Prof. Will- 
iams at any time intended to take in any otiicr members than 
those beds commonly referred to the Burlington and Keo- 
kuk. Indeed every reference made b}- this aiuhor to the 
subject seems to indicate beyond all doubt that no other mean- 
ing is to be attached to the term. In every allusion to the suc- 
*Arkansas Geol. Sur., Ann. Rep., 1888, vol. IV, p. xiii. i8qi;and ibid 
Ann. Rep., i8qo, vol. 1, ]). IJ3, i8qi. 
