Quart. Journ. Ceol. Soc Vol XXXV PLXXXVIIL 
50 
[ATLANTIC 
i, OCEAN 
Sag ee Mgnt 
came baal 
yer 
Vi CS 
i 
ee 
PoRPHYRY 
Old River Deposit. 
Dancerrieto.Lit.22.Beororo S! Covent Garoen. 
the Amazon, eastot Tabatinga. 
