^EOLOGICAI. SURXTLY 



JEOLOCY OF LEAD^'ILLE, PL XXX\- 



^ l^Sife 



mmtm v:!' 



/Vy / SMALLER FURNACE 

 ELEVATION 



fh, ^ LARGER FURNACE 



ELEVi>j::ClT 



ard.MetoUiir 





SQUVRE FURNACES. 

 SMELTER G. 



