AGATE 
Physical Properties and Origin 
BY 
OLIVER C. FARRINGTON 
Curator op Geology 
p 549.6 
A 263 
Archaeology and Folk-lore 
BY 
BERTHOLD LAUFER 
Curator op Anthropology 
Geology 
Leaflet 8 
FIELD MUSEUM OF NATURAL HISTORY 
CHICAGO 
1927 
