Magnified 5 diameters. 
Magnified 30 diameters. 
n Ironstone. 
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"Rms® 
, Liverto 
polished surface on right. 
Top bed 
; oblique illumination. 
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No. 2.— 
Polished surface 
NATURALIST, 1913 
Fractured surface (dark) on left; 
THE 
