246 TRANSACTIONS OF THE [JUNE 4, 
Pror. F. A. Goocu, 
LA PrINcESSE HELENE KOutTzorr-MASSALSKY, 
Rey. THomas Morona, 
Mr. T’. MELLARD READE. 
The Librarian, Dr. N. L. Brirron, read the list of Accessions 
to the Library for May. 
Pror. O. P. HuBBARD showed a milk tooth of a Mastodon, 
from the phosphate beds of Beaufort, 8. C. The base of the 
tooth, without projections, is six and one-half by three inches, 
The crown is three inches high, with four ridges, each ridge 
with two eminences, the inner ones notched. ‘I'he two an- 
terior or smaller pair are covered by an adhering oyster shell. 
The PRESIDENT remarked upon the distribution and extinction 
of the animal, and the occurrence of the fossils. He had informa- 
tion of a tusk, in Indiana, which is ten feet long, and weighs one 
hundred and eighty pounds. 
The two following papers were read by title : 
NOTES ON THE SUBCARBONIFEROUS SERIES AT SEDALIA, 
MISSOURI. 
By F. A. SAMPSON. 
Sedalia, Missouri, is near the boundary line of several geologic 
terrains, the Magnesian series appearing at the surface two 
miles south, and the Coal Measures a few miles west. 
In the quarries close by the city, the Burlington series is only 
a few feet in thickness, and rests upon the Chouteau limestones 
of the Missouri Geological Survey. ‘These limestones are here of a 
gray or dove-colored stone, 144 feet in thickness, as shown in an 
Artesian well boring of 1,600 feet. 
In the neighborhood are some pockets of coal, which have 
been deposited in depressions on the Chouteau limestones. 
The Chouteau limestones are referred by Prof. G. C. Swallow 
(‘‘ Missouri Geol. Rep.,” 1855, p. 101) to the Chemung series, and 
by Prof. James Hall (‘‘ Geol. Surv. Iowa,” 1858, p. 103) to the 
same series; Prof. A. H. Worthen (‘‘ Geol. Surv. Illinois,” Vol. 1, 
1866, p. 109) refers this series to the Kinderhook group, which 
occupies in geological time a similar place to that of the Waverly 
series of the Ohio Geological Survey. 
Dr. C. A. White (“U. S. Geol. Surv. Terr.,” 12th Ann. Rep., 
1878, p. 159) remarks with regard to this series, and its fossil 
