Mineralogy and Geology. 267 
ometer showed 19-194 in., and the thermometer 11° Centigrade. 
Water boiled at 192° Fahr. ‘This elevation is a little more than twelve 
thousand feet. 
y TP 
Seat, (In a letter to one of the Editors, dated, Philadelphia, Feb. 3, 
1851.)—In reading the last number of the Journal of Science I was 
much interested with Dr. Smith’s paper on the Corundum and accom- 
panying minerals of Asia Minor. 
analysis made at present, I think we may safely infer that it is the same 
the termination of the cor preserving the form of the corun- 
shee imes there is found on the masses of corundum a mam- 
millary incrustation having a fibrous appearance which I take to be the 
heat, but according to Berzelius this is not a constant character. 
Surprised to find so important beds, almost within our borders. About 
'wenty-two thousand tons have been removed, fairly opening the work- 
ngs, which can be so enlarged as to employ two hundred miners with 
every prospect of profit to a large amount. : 
The coal is in favor here for large fires and being sold at one 
fourth less price than that of Pennsylvania, meets a want which has 
long existed. 
