., , VII ARTICLE VII. 



Volume All. p. 97-127. 



. BULLETIN 



OF THK 



SCIENTIFIC LABORATORIES 



DENISON UNIVERSITY. 



EDITED BY 



W. W. STOCKBERGER, 



Permanent Secretary Denison Scientific Association. 



COPPER-BEARING ROCKS OF YIRGILINA COPPER DISTRICT, 

 VIRGINIA AND NORTH CAROLINA. 



By THOMAS LEONARD WATSON 



^Granville. Ohio, July, 1903. 



