35 
HALLS 63 AND 64. 
SYSTEMATIC MINERALOGY. 
The systematic collection of minerals numbers about 5,000 
specimens. The arrangement of the collection is based upon 
that given in Dana’s New System of Mineralogy, a copy of 
which work may be found in the library. The order which is 
TO be followed in a study of the collection is shown by the 
numbering of the cases. Thus, entering Hall 63 from the south, 
the visitor finds Case No. 1 at his or her left, and the order then 
follows along the west wall through the oxides in Case 4, back 
on the western side of the center aisle, down the eastern side, 
and back along the east wall ; then passing to Hall 64, the or- 
der continues with the phosphates in Case 15 on the western side 
and ends with Case 17 on the eastern side. 
Complete case labels above each case indicate the groups to 
which the specimens beneath belong, and show the chemical 
composition and system of crystallization of each species. The 
specimen labels show the name of the species, its number in 
Dana’s • system, its museum number and the locality. 
As specimens^ worthy of especial notice may be mentioned, 
among the sulphides. Case lA, the large crystals of stibnite 
from Japan; among the haloids, Case 3A, the beautiful green 
and purple fluorites from English and American localities; 
among the oxides, Case 4, the extensive collection of natural 
and artificially colored agates from South America; among the 
carbonates. Case 6B, the magnificent groups of calcite from 
Joplin, Mo., the curiously distorted crystals, sometimes called 
‘butterfly twins,” from Egremont, England, and the brilliant 
groups of the same mineral from the Big Rig Mine, Cumber- 
land, England; Case 7A, the Elos Ferri aragonites, which look 
like triumphs of the confectioners art, and the delicately tinged 
stalactites of the same mineral from the Copper Queen Mine, 
Arizona; among the silicates. Case SA, the large crystals of 
Amazon stone from Pike’s Peak, Colorado, and. Case lOB, the 
transparent and perfect crystals of topaz from Siberia; among 
the^ phosphates. Case 15, the richly colored vanadinites from 
Arizona, and among the sulphates. Case 16, the brilliant groups 
of barite from Cumberland, England, and of celestite from 
Sicily. 
