FIELD CoLuMBIAN MusEuM 
PUBLICATION 33. 
GEOLOGICAL SERIES. Viorel, No.3. 

Pee ORES OF COLOMBIA 
From Mines in Operation in 1892. 
BY 
Henry Winpsor Nicuo.s, S.B. 
Assistant Curator of Department. 
OLIVER CUMMINGS FakRINGTON, PH.D. 
Curator of Department. 


CMICAGO. Winton A: 
March, 1899. 
