390 E. Emmons on New Fossil Corals from North Carolina. 
a 
aia. but extend from the apices to the base or edge. 
P. minor pe 
a rounde 
e 
young one, appears on the edge of fig. la. The bie Sacer of 
similar buds produces a change of form, as represente 
individuals are very numerous, the rock being compose almost 
entirely of them, intermixed with concretions, for 600 or 700 
feet in thickness. 
The debris of this fossiliferous sandstone has been worked 
quite successfully for gold. The metal is contained in ferrugl- 
nous masses, in the rock which appears to have been an aurifer- 
ous pyrites. Over $100,000 have been procured by pulverizing 
and washing this material which also very frequently contaims 
the Palzxotrochis. 
Albany, September 10, 1856. 
J 
vA 
