GEOLOGICAL SURVEY 



GEOLOGY OF LEADVILLK, PI. OSES. 



IEOMSTRIC PROJECTION 

 e on vertical lines: 2 fl to lin 



M ftea del 



JulIusBien4C.>.liih. 



ASSAY FURNACE 

 SMEl.TKR H. 



s. I-'. Kmmon*. Ceologi3t*in- Charge. 



