University Geological Survey of Kansas. VOLUME VIII. PLATE LIII. 
aie 
5 
ll, Galle, 
2, Inter-facial Angles on Galena. 
‘« 3, Long Etch or Ground Figures on Galena. 
4, Growth Figures on Galena. 
), Outline of Internal Cavities, or Negative Crystals of Galena. 
‘“ 6, Incipient Etch Figures on Sphalerite. 
34—viil 
