Editorial Comment. 419 
sphalerite (ZnS), and their associations, from the famous 
Friedensville mines. Wisconsin displayed a large quantity 
of zinc minerals, the principal being smithsonite (ZnCo 3 ), a 
most unattractive looking mineral. Missouri had beautiful 
specimens of crystallized and massive sphalerite, calamine, 
and smithsonite. New Jersey exhibited a fairly good collec- 
tion of zinc minerals, including the beautiful zincite (ZnO), 
with its gorgeous coloring, associated with franklinite (Fe203 
-f ZnOMnO), and botryoidal smithsonite and calamine, all 
from Sussex county. But the zinc minerals, like those of lead, 
copper and iron, are so widely distributed throughout the 
country that nearly every exhibit contained many specimens, 
making it difficult to select the best and typical specimens in 
each section. 
Spain had an unique specimen of galenite, a cube contain- 
ing fully 60 cubic feet. 
Arizona displayed a very large block of the beautiful azu- 
rite, surmounting a base of malachite; some fine specimens of 
chrysocolla. the copper silicate, associated with wad ; magnifi- 
cent specimens of the beautiful minerals, vanadinite and 
descloizite ; and some of the rarer lead and silver minerals, 
for which this state is now famous. 
Japan had a good collection of stibnite (Sb2S 3 ), some very 
large and fairly well crystallized, but none equal, either in 
size or form, to some from the same localities now in our 
American collections. Native antimony was also exhibited. 
Nevada, and other western states. Canada, and New Smith 
Wales, also displayed native antimony and stibnite, and the 
latter country, auriferous stibnite. 
(assiterite was exhibited from New South Wales, Mexico, 
South Dakota, and Wyoming. Orpiment and realgar were 
exhibited from Oregon. 
Large and well terminated quartz crystals were shown in 
the Japanese section; one beautiful specimen with perfect 
terminations, from Kimpozan Kai, being nearly 40 cm. long, 
another about 18 cm. thick and over 65 cm. in length. 
Great Britain had a large collection of economic minerals, 
well arranged. Canada had a large number of collections of 
silicates, oxides, carbonates, sulphides, etc. representative not 
