THE COLLECTION OF MINERALS 
Cases 3 and 4, Wall Cases C, D, E, F). In every large collection 
this mineral offers a splendid display of colors and associations, 
and in the Bement collection the series of specimens is especially 
attractive. From Cumberland, England, there are elongated 
cubes with attached Calcite crystals; large cubes coated with 
crystals of Quartz; purple and green cubes densely ruled with 
fine lines, which indicate oscillations of crystal development; 
FLUORITE COATED WITH QUARTZ, CUMBERLAND, ENG. 
green cubes from Cornwall with feathery edges of purple, inclu- 
sions of black specks and interior colored boundaries (phantoms) ; 
also from Brienz, Switzerland, crystals with low scallop-like de- 
pressions, pyramidal pits, wrinkling lines and pin-holes, the whole 
resembling an eroded or half melted ice-block; from Saxony, yel- 
low cubes with Galenite; magnificent pink octahedrons from 
Switzerland, some of them with blunted or rounded angles made 
by the planes of the trigonal trisoctahedron. 
The Oxides follow the simple compounds of the metals and 
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