Permian Formations of Kansas— Prosser. 161 
nut river at Winfield, which is the Fort Riley limestone, 
when followed eastward is apparently represented as out- 
cropping in the lower part of the slope to the west of Cam- 
bridge. The detailed investigations of Dr. Beede from 
Grand Summit to Burden show that the above section is 
incorrect and that the Wreford limestone occurs at a higher 
position than the supposed outcrop of the Fort Riley lime- 
stone. With this change in the general interpretation of 
the section it becomes evident, when the strata are followed 
eastward to the railroad cut east of Grand Summit, that my 
correlation of the upper limestones there exposed with the 
Strong, now called Wreford limestone, is erroneous. * Dr. 
Beede states that the Wreford limestone caps the top of the 
hills north of Grand Summit and that its base is strati- 
graphicallv at least 90 feet above the heavy limestone by the 
last railroad cut at Grand Summit. This shows that the 
very fossiliferous shales and shaly limestones, No. 28, of my 
section, together with the massive limestone below No. 27, 
do not belong in the Wreford limestone but below the mid- 
dle of the next older formation, the Garrison. The state- 
ment that the fossiliferous shales of No. 28 of the Grand 
Summit section are equivalent to No. 14 of the section west 
of Reece is incorrect* as well as that in the Cottonwood 
Falls Folio, that the lower 25 feet of the Wreford limestone 
occurs east of Grand Summit station,* which should be 
omitted. 
It is clearly shown by Beede and Sellards in the above 
mentioned paper that the Wreford limestone is a conspicu- 
ous formation which may be readily followed from southern 
Nebraska across northern and central Kansas, at least into 
the southern part of the latter state. This is fortunate in 
case the Wreford limestone be considered the base of the 
Permian because it will afford a marked lithologic break 
for the line of division between the Permian and the Car- 
boniferous. 
Kan. Univ. Quart, vol. vi. 1897. pp. 160, 161. 163, No's. 27 and 28 ol 
the "section from Grenola fo Grand Summit," 
* p. 163. 
t Geol. Atlas, U. S., No. 109, p. 3, col. 3. 
