JOURNAL OF PROCEEDINGS. 687 
nite. But we have traced the boundaries of the Coal Measures so far.as 
to be able to say, that the area occupied by this formation is not less than 
4,500 square miles, and pe s much gre The cal range of the 
formation has not yet been determined accur ly, but it cannot fall short 
of eh seen four diffe beds of coal section, 
the thickest being nearly four feet. The companying 
€cognize many Missouri friends. The conglomerate is from eighty to 
one hundred feet thick.” 
Dr. C. W. Stevens exhibited a botanical specimen which 
had the hygrometrical property of expanding, when wet, anc 
coiling up into a ball, when dry. 
r. Engelmann designated it as Selaginella lepidophylla, a 
well-known cryptogamous plant, found abundantly in south- 
western Texas, in Mexico, and as far as California, as ascertained 
by . 8S. Boundary Exploration. Selaginella is a lyco- 
three species of the eastern U. States, one of which, 4S. 
rupestris, is also found in our State, and extends throughout 
North and South America and Asia, do not have this property. 
Henry Engelmann, Geologist, Washington, D. C., and Amos 
H. Worthen, State Geologist of the State of Illinois, were 
elected Corresponding Members. 
December 19, 1859: 
The President, Dr. WistizeNvs, in the chair. 
Eight members present. aa 
Letters were ian from Messrs. A. H. Worthen, Springfield, 
Ills, and H. En elmann, Washington, D. C., severally ac- 
knowledgine their election as Corresponding Members ; also, 
from Prog ‘ Ww. Mosblech, Bethany ed acknowledging re- 
Celpt of publications. ys: Dy 
onations to the Library were received as follows : Dy a 
et Trias, ou le Nouveau Grés Rouge en Burope, dans Ane 
wikcelimatation, Tome VL, No. 10, Oct., 1859, from the So- 
“ys Rep. on Geol. and Mining Districts © 
; ma by 5. V. Phillips, St. Louis, 1859, from the inh : 
our. of Education, Montreal, Nov., 1859, from Capt. L. A. 
uguet-Latoup. . 
basta Seyffarth, concluded the reading of his paper 
atig ee A Remarkable Papyrus-Scroll, written in the rae 
“tle character about 1050 B. C.,” illustrated by a fac simile an 
39 : 
