ad 
factures. of iron both in light and heavy work, and it is said 
- our globe with animated beings, inyests it with additional inter- 
14 » Human Foot-Prinis in Solid Limestone. 
made, until. the whole of the capital, with the exception of some — 
twelve per cent., has been repaid. When that,is accomplished, the 
tolls are to be so reduced as to allow. six per cent. upon the then — 
nominal capital only, and to pay the expenses of transportation, at — 
which time the charge for transportation ought to be reduced 
. some two and a half cents per bushel; and if at that time the — 
contemplated branching to Warwick shall take place, and locomo- ~ 
tive power be substituted for the present expensive plan of using — 
horse power, then the price of Virginia coal can be so lowered as — 
to make it the interest of all consumers of bituminous Dial an 
our Atlantic border to use it almost yiaccenlin 
+ Richmond, tty 1, 1841. 
*“Rethark by the senior ‘editor.* —The coal of Virginia has been — 
long. known throughout the Atlantic states. From the Mid Lo- 
Coal Mines, we have recently received a series of specimens 
illustrative of the structure of this coal-field. It is based upon 
granite, and consists of the usual alternations of sandstones, shales, — 
clays, and coal. 
The coal is of an excellent quality; and it appears from print- 
ed certificates. of many manufacturers, that it is used in very Va- 
rious | operations requiring fire, especially in the different n manu- ’ 
have been atid introduced into the manufacture » a aie 
* 
Art. Il.—Regarding Human Foot-Prints in Solid Limestone; ee 
by Davin Dick Owen, M. D., of Indiana, with a plate. ~ 
e (Communicated for this se 3 ~ ) 
‘Tue occurrence of representations of beau feat i in aalid ae 
has lately excited considerable attention, both in this country and 
in Europe. The intimate connexion of the subject with those _ 
great problems, the age of our race and the gradual peopling of — 
est, in the eyes not — of the scientific explorer but of the gen -. 
eral reader also. 
