74- 
75: 
"6. 
ie 
78. 
79: 
26 
HoRNBLENDE, Russell, N. Y. 
Nos. 62 to 74, fifty specimens, exhibited by Prof. A. H. 
Chester, Rutgers College. 
PyroxENE, Tilly Foster mine, Brewster’s, N. Y. A new 
form and very large for this locality. 
CARBIDE OF ALUMINUM, crystals formed in an electrical 
furnace. 
Nos. 75-76, exhibited by Heinrich Ries. 
THE PHOSPHORESCENCE OF THE DIAMOND. Apparatus de- 
signed to show this peculiar feature of some stones by 
electric are light. The phenomenon is thought to be due 
to the presence of a new hydrocarbon compound to which 
the name ¢¢ffanyzte has been given. A phosphorescent 
liquid is introduced for comparison, and some non-phos- 
phorescent diamonds for contrast. Exhibited by George 
F. ciKunz. 
APpoPpHYLLITE, Bernfiord, Iceland. Crystals showing the 
planes, O07, 200, 310, ZII, I12. 
HeEvLANDITE, Bernfiord, Iceland. Crystals showing ozo, 
OOT, 110, 207, 20F, O21, 77T. 
StiLBiTE, Bernfiord, Iceland. 
Muscovite. Henry Lincoln Co., N. C. Crystals. 
PHENACITE, Mt. Antero, Colorado. Twinned crystals. 
PHENACITE, Mt. Antero, Colorado. Shows basal plane. 
CHABAZITE, West Paterson, N. J. Shows basal plane. 
Nos. 78 to 84 exhibited by Lazard Cahn. 
Specimens from a new locality at West Paterson, N. J. : 
HEvULANDITE and APOPHYLLITE, two specimens belonging 
together. 
HEvuLANDITE, large aggregation in the form of a geode. 
HEULANDITE and CHABAZITE. 
HEvuLANDITE, red and white in one aggregation. 
