rjb GEOL.OGICAl, tiimVRY 



GEOI.or.Y OF LEAD'vlLLE, PL XXXIa 



ISOMETRIC PROJECTIOK 

 Scale on vertical lines; 2 fl To lin t 



A.Giivnrd MdnlliiiSi! 



Julius Bien&e'o.liUi 



ASSAY FURNACE 

 SMEJ.TER H. 



S.F. Emmons. Geologist-in- ( liarge 



