484 SMITIISONrAN MISCt:LLANK()US COr.LECTIONS. VOL. 52 



EXPLANATION OF PLATE LIX 



Fig. I. Cube face of pyrite, showing crystals of gold, fantastic branching 

 forms of galena, and aggregate of chalcopyrite. The striations on 

 the pyrite, with their octahedral terminations, may also be seen. 

 Magnified about one and one-half times. 



Fig. 2. Cube face of pyrite, showing galena of various appearances. Magnified 

 about one and one-half times. 



