624 TRANS. OF THE ACAD. OF SCIENCE. 
sented to a blacksmith of that place, in whose possession it 
remained for several months. In December last, Mr. Higb 
of McKinney brought me a small hammered specimen of 
this iron, weighing forty grains. He stated that the mass 
from which he had taken the specimen weighed about forty 
pounds when it arrived in McKinney, but that the black- 
smith had cut off several pieces, which he had wrought into 
cane heads and various implements, so that its original size 
had been very much reduced. 
During last winter, Dr. G@. G. Shumard procured from the 
blacksmith a piece weighing twelve pounds five and a half 
ounces, which after strict inquiry was all that could be found 
of the original mass. 
iece is of an irregular shape and appears to have 
e. 
close-textured and appears to be quite as malleable as the 
Brazos iron. 
The chemical composition, as determined by Prof. W. P. 
Riddell,is— 
ec. grav. 7.6698 
Residue insoluble in NO* . p _ 0.32814 
Iron (mean of three determinations) _ 94,02466 
Nickel, . - : “ 5.42982 
Cobalt, . - *S e a trace 
99.78262 
Descriptions of five new Species of GASTEROPODA from the 
Coal Measures, and a Bracutorop from the Potsdam 
Sandstone of Texas. By B. F. Suumarp, M.D., State 
Geologist. 
PLEUROTOMARIA BRAZOENSIS, 0. Sp- 
Shell small, conical, height a little greater than the width ; 
slightly con- 
inz, between 
