_ tes of observ 
Indicate sufficiently that such inclusions are not 
G. W. Hawes—Liquid Carbon dioxide in Smoky Quartz. 208 
Art. XXIV.—On liquid Carbon diowide in Smoky Quartz ; 
by GrorGE W. Hawes. 
for the number and size of these inclusions. As my suppl 
of excellent specimens is nearly limitless, a knowledge of these 
occ i ; 
n examining the specimens of quartz in the cabinet of 
Professor Brush a number of crystals were found to contain 
€mpyreumatic odor, and which gave reactions for ammonia 
4nd carbonic acid; that a sooty deposit formed on the neck of 
his retort, and that the quartz was decolorized by this distilla- 
tion. He therefore concluded that the coloring matter was a 
2h lie hydrocarbon decomposable by heat. 
ave i i 
r 
smoky quartz. The following localities furnish specimens 
nS 
“ag cubic crystals in the water, and some are crystalline in 
White Plains, North Carolina. Cavities fewer than in the 
recedin 
Monte Sella. Same as in the smoky quartz of Pike’s Peak. 
re ibia, St. Gothard. Cavities 2 min. in longest diameter, 
"ge enough to be studied with a simple pocket lens. 
he : * Pogg. Ann., exliii, 173, 1871. 
. Jour. pe Series, Vou. XXI, No. 123.—Mancu, 1881. 
