702 THE JOURNALVOTENGHOLOGY: 
19. Archeéocidaris plates and spine. 
20. Bryozoa sp. 
21. Glauconome sp. 
From the Hamill quarry near Clements the two follow- 
ing species were obtained : 
22. Productus cora, d’Orbigny. (tr) 
23. LMstulipora nodulifera, Meek. (rr) 
A study of the above fauna will clearly show it to be one of 
the Upper Carboniferous of the Mississippi Valley and Great 
Plains, although many of the species occur in the deposits called 
Permo-Carboniferous and an occasional one has been reported 
from the so-called Permian rocks of the United States. A com- 
parison of the fauna of the Wabaunsee formation with that of 
the Cottonwood will reveal the fact that while the former con- 
tains more than twice as many species as the latter, which pro- 
portion will probably not be materially changed by further search, 
still every species of the Cottonwood formation with the exception 
of Aviculopecten McCoyt, M. and H., and Chetetes cf. carbonarius, 
Worth, which are doubtfully identified, occurs in the Wabaunsee 
formation, consequently, as far as the biologic evidence is con- 
cerned, there is no support for placing the Cottonwood formation 
in a system or even series, distinct from that of the Wabaunscee. 
Former descriptions of the Cottonwood limestone.—The Cotton- 
wood limestone was among the first stones of the state to be 
used for construction where strength and durability were desired, 
but it is not known to the writer at what date it was first called 
the ‘‘Cottonwood stone.” It forms bed No. 80 of Swallow, 
which he called the ‘‘ Husudzna limestone’’ and described as “buff, 
porous and: magnesian,” six feet thick, exposed at ‘‘ Manhattan, 
Cottonwood Falls and Mill Creek.” * 
It forms the summit of Blue Mount and Mount Prospect at 
Manhattan and the bluffs along Mill Creek above Alma, conse- 
quently it appears that Professor Swallow correlated the several 
exposures of this limestone correctly although he made no refer- 
ence to its extent, in the descriptive part of the work. Later 
y 
* Prel. Rept. Geol. Surv. Kansas, 1866, p. 16. 
