NOTES ON SOME OXIDISED COPPER ORES. 479 



No. 8. Garnet-rock containing about ^ per cent, of copper, 

 disseminated throughout, from £1 Promontorio. 



No. 9. Garnet-rock containing about 4 per cent, of copper, 

 disseminated. Prom El Promontorio. 



No. 10. Highly silicified cuprite, malachite, and chessylite, 

 from La Prieta. 



