58 J. M. Stiliman—Bernardinite, a new Mineral Resin. 
tissue. The specific gravity of the mineral freed from air was 
determined as 1-166 at 18° C. The mineral does not melt per- 
fectly at 140° C., but softens slightly at temperatures below 
1 ° 
It is insoluble in water ;—entirely soluble in hot absolute alco- 
hol, about 86°6 per cent dissolving on boiling for some time. 
The soluble portion is quite soluble, remaining in solution in 
about 2} parts of hot alcohol. In cold absolute alcohol it is 
not so soluble, about one-third of that portion soluble in hot 
alcohol, not re-dissolving in cold. The alcoholic solutions are 
of a slightly yellow color, marked bitter taste, and acid reac- 
i Ether dissolves about one-third of the native mineral 
at ordinary temperatures. Carbon disulphide dissolves it but 
slightly. The residues from the solutions were in every case 
white and amorphous. 
The extract with hot alcohol melts at temperatures between 
115° and 125° C., but has no constant melting point, and soft- 
ens somewhat at lower temperatures. On cooling after fusion 
it forms a brittle, translucent mass. Heated on platinum foil 
the mineral burns with smoky flame, with fixed carbon residue, 
:% : 
but with only a trace of ash. n ash determination gave 
"12 per cent of a white, infusible ash, evidently silica. With 
concentrated sulphuric acid it gives a red-brown color, which 
on warming becomes black; on dilution with water black 
kes are precipitated. The mineral, dried for several days 
over sulphuric acid, lost on heating to temperatures below its 
certainly, water. It contains no nitrogen. Elementary analy- 
sis of the mineral dried over sulphuric acid gave— 
Carbon = 64°53 per cent, 
Hydrogen = si a er 
Hence Oxygen = 
melting point 3°87 per cent in weight, probably, though not — 
TO 
26°27 * 
100°00 
Admitting the loss in weight above quoted, of 3°87 per cent, 
as being due to loss of water, we should have as a complete 
analysis— 
Water 2. 2-7 SST per vent. 
Caron 3. ere 
Hydrogen (not in water) 8°75 “ 
xygen (notin water) 22°30 “ 
WON os was Select 0°12 
—  100°00 
In caustic potash the mineral dissolves very readily and 
almost completely (935 per cent). The solution when concen- 
trated is of a light, clear, brownish-yellow, and may be diluted 
% 
