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; 



FLUOR1TE COATED WITH QUARTZ, CUMBERLAND, ENQ. 



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 



