DESCRIPTION OF PL. XX. 



Samples. 



Fig. A. Cannon mine CI, Oil 



. (No. 1 CIII 



B. Simpson mine | Nq> 2 Cly 



( '. Excelsior mine CV, CVI 



D. Excelsior mine C VII 



E. Gladstone mine CVIII 



F. Marshall Consolidated mine, 1,200' W. of shaft OXV, CXVI 



G. Marshall Consolidated mine, 400' W. of shaft 



II. Marshall Consolidated mine, at shaft 



I. Acme mine CIX, CX 



J. Acme mine CXI 



K. Caledonia mine CXVII, CXVIII, CXIX 



L. Ajax mine CXII. CXIII. CXIV 



M. Allen-Bond mine CXXVI 



X. New Boulder Valley mine CXXV 



O. New White Ash mine CXX,CXXI 



, No. 1 CXXIII 



P. Pocky Mountain mine < „ PVXTY 



374 



