DESCRIPTION OF PL. XIX. 



Samples. 



Fig. a. Welch mine 1 



B. Welch mine II, III, IV 



0. Dunn mine V 



1). Baker mine XIII, XIV. XV 



E. Cleveland mine XVI, XVII 



F. McGregor mine XXII, X X 1 1 1 



G. Stewart mine XIX. XX. XXI 



H. Garfield mine XXIV 



1. Garfield mine (specimen from Garfield mine for special analysis. 



XXXVII) XXV. XXVI 



,1. Mitchell mine XXVII. XXVIII, XXIX, XXX 



K. Jackson mine XXX 1 11. XX X IV. X XX V. XXXVI 



L. Star mine XXXI. XXXII 



M. Progress mine XVIII 



N. Scranton mine XXXVIII, XXXIX. XLII 



O. Scranton mine XL, XL1, XLII1 



372 



