766 THE JOURNAL OF GEOLOGY. 
“6, Yellowish blocky shales - - - - E 5 Ss ae 
containing a Lamellibranch fauna of Pseudo- 
monotis and Aviculopecten, which in places 
appear to form a massive rough limestone sim- 
ilar to No. 8. 
«« 5. Greenish shales - - - - - = 7 ieee OB 
« 4. Chocolate and drab shales - - - - Ae 4h 
«3. Shaly limestones - - - - - - Ne 09 
«« 2. Yellowish shales - - - - - sae Yemen 12S) 
with abundant fossils in the lower part. Coféon- 
wood shales. 
“1. Cottonwood limestone - = - - - fe) 
exposed just above railroad switch, 2° +. 
In the above section, the beds from No. 3 to No. 16, inclu- 
sive, with a total thickness of 130 feet are regarded as forming the 
Neosho formation. Stratum No. 8 which weathers to a very rough 
jagged surface, is somewhat similar in lithologic appearance to the 
in the upper part of the Wabaunsee for- 
2 
”) 
‘““dry bone limestone 
mation. This limestone has usually been considered magnesian, 
but the chemical analysis reveals only a trace of magnesia, and 
to the presence of silica may be ascribed its roughness. 
Paleontology.— As described in the above section, the Neosho 
formation contains green, chocolate and yellow shales, and as 
the yellow shales approach the lithologic conditions of the Cot- 
tonwood, they frequently contain some of the Cottonwood fos- 
sils. No. 7 is one illustration of this statement, and the top of 
* The thickness and lithologic characters of Nos. 3 to 7, inclusive, were obtained 
in part from the section at the east end of second railroad cut west of Crusher Hill. 
In the measurement of the lower part of the section I was assisted by Professor Eras- 
mus Haworth of the University of Kansas. 
2See Prel. Rept. Geol. Surv. Kans. p. 15, where No. 78 of Swallow, a “gray and 
drab porous limestone, 2 feet,” 38 feet above the Cottonwood is evidently this stratum. 
3 The following analysis is by Mr. Warren Finney: 
SiO. : 2 - : 15.99 per cent. 
CaCO; - - - - Se AOS es 
Al,Os - - - - Aj 
esOg 5 - - - - 1.03 ss 
MgCo, - - - - trace 
OO 7 
COxz - - = 2 zx 38.75 “c 
