60 Phosphate Rocks of South Carolina, 
DISCOVERY..OF. STONE, ARROW, LEADS 
AND»: As STONE TATCHE TEIN) EDS sok 
POST-PLEIOCENE AGE. 
It was on the 23d or 24th day of February, 1844, 
whilst engaged in the removal of the upper beds 
covering the Marl, and preparing for opening the 
large pit just alluded to, the laborers discovered 
among the rocks several stone arrow heads and one 
stone hatchet ;* they were found directly under the 
roots of a large oak, which was cut down and its 
roots removed to make way for our marling opera- 
tions. The tree stood just within the margin of the 
high land skirting the marsh; the pit as laid out, 
encroached upon the high land side about ten feet, 
and the depth of soil was about three feet above the 
rocky stratum. 
The late Dr. Thomas L. Burden, an accomplished 
gentleman and scholar, and a true lover of nature, more 
especially of the departments of Botany and Paleon- 
tology, accompanied us almost daily collecting fossils 
in the neighborhood. We had during our explorations 
discovered upon one or two occasions a few arrow 
heads and spear heads, (for such we took them to be,) 
in “out of the way” places, and differing so greatly 
in their general characteristics from those found 
commonly scattered all over this Continent, that we 
examined and studied them again and again with 
deep interest, and were continually comparing them 
* These Specimens are still in our Cabinet. 
