HAWORTH AND BENNETT.| General Stratigraphy. 97 
reached, where it is quite thin and again becomes a very im- 
pure limestone largely mixed with clay shales material. 
Fauna.—See Doctor Beede’s chart, plate XLII. 
Chanute Shales.4% 
The term Chanute shales is here used to designate the shale- 
bed lying first above the Drum limestone and first below the 
Iola limestone. This name was introduced by Haworth and 
Kirk in 1894 in a preliminary publication, as already ex- 
plained in this report, at a time when a number of geological 
sections were run across the state. In that instance local 
names were given to each formation under each section. Later, 
when a system of correlation was introduced, some of these 
names had to be dropped. It was found that the name Chanute 
shales was applied to the same formation in one section that the 
name Thayer shales was applied to in another. In volume III 
of this series of reports, page 49, it was decided to drop the 
term Chanute shales and retain the term Thayer shales. As 
they had been introduced at the same time one of them neces- 
sarily had to be dropped and priority in no way entered into 
the question. 
Subsequently Adams,*! in a government publication, restored 
the name Chanute shales, apparently under the impression that 
priority demanded it, and the term has been used since then by 
at least two different governmental publications. At present, 
therefore, we are forced to decide between the use of the term 
Chanute, as employed by our government upon the advice of 
Adams, or Thayer, as previously employed by this Survey. As 
just explained, it is not a question of priority, the two being 
introduced at the same time and in a similar manner. The 
frequency of usage, however, is in favor of the government 
publications, and we bow, therefore, to the greater power and 
use the name Chanute. It may be stated in passing that possi- 
bly the shale-bed is the same as Broadhead’s number 97, which 
he does not name, and that apparently it corresponds in part 
to what Swallow, in his 1866 report, calls Kinstein sandstone 
No. 157. Why he should call so heavy a shale-bed a sandstone 
is not known, and also it should be remembered that the corre- 
lations were so imperfect that it is quite possible the above 
statement of Swallow is incorrect. 
40. Haworth, Prof. Hrasmus, and Kirk, M. Z.: Kan. Univ. Quart., vol. II, p. 109. 
Lawrence, 1894. 
41. Adams, Dr. George I.: U.S.G.S., Bull. 211, p. 38. Washington, 1903. 
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