Working Outfits. 181 
DIAPHANEITY. 
1, Transparent; 2, Semi-Transparent; 3, 
Translucent; 4, Sub-Translucent; 5, 
Opaque. Large specimens mounted on 
DRI Y: DIOGED. caves ces sc eee hana 2.50 
THIRD AND FIFTH PROPERTY. 
CoLor AND STREAK. 
a. 25 of the most important specimens 
mounted on cherry blocks............. $12.00 
b. 56 large specimens, illustrating the me- 
tallic and non-metallic colors, mounted 
BMOMIOPEY, QIOCKD 6 n'. 3 5 5108 + oiaie bated Wi brain 28.00 
c. Same as foregoing, but smaller speci- 
mens and in pasteboard trays.......... 14.00 
FOURTH PROPERTY. 
ScaLe or HARDNESS. 
a. 1, Tale; 2, Gypsum; 3, Calcite; 4, Fluor- 
ite; 5, Apatite; 6, Orthoclase; 7, Quartz; 
8, Topaz; 9, Corundum; 10, Diamond. 
With streak plate and file. Tray........ $ 5.00 
b. Same, but smaller specimens, in hard 
RE ORG OOS. ¢ ssp'c be » dla lenew eoans 1.50 
c. Same as foregoing, without diamond.... 1.00 
SIXTH PROPERTY. 
FRACTURE. 
1, Even; 2, Uneven; 3, Conchoidal; 4, Sub- 
Conchoidal; 5, Splintery; 6, Hackly. 
Large specimens mounted on» cherry 
MORPHS, 5-0 hee BUR a oem oo aug & ob IS $ 3.00 
CLEAVAGE. 
1, Cubic; 2, Octahedral; 3, Rhombohedral ; 
4, Basal; 5, Prismatic. _ Large speci- 
mens mounted on cherry blocks........ 1.25 
SEVENTH PROPERTY. 
TENACITY. 
1, Brittle; 2, Sectile; 3, Malleable; 4, Flex- 
ible; 5, LElastic. Large specimens 
mounted on cherry blocks............. $ 2.50 
