6? 
Following the Missouri zinc ores come those of the South 
eastern and South.central states. The Virginia and Tennessee 
ores are not essentially different from those of the ”ry 
South Illinois, Kentucky 
and New Jersey are decidedly unique. ^ 
New Jersey there is a collection of 
to b. r'iTo”'' 
BO o richness : the oxide zincite 
■ sulphide, sphalerite, 67 per cent of 
zinc; the silicate, willemite, 58.5 per cent.; the hydrous silicate 
calam^ne, 54.2 per cent., and the carbonate, smithsonite. 52 p^ 
The three cases across the entrance to Hall 63, from the 
zmc ores, contain ores of mercury and various metals and metal! 
Olds of lesser importance. 
MERCURY. 
The first case to the right of the entrance contains a series 
w<?rrMzy and cinnabar, with the rocks associ- 
ated with them, from many localities. Mercury ores from Cali- 
sWn. Colombia are 
SoanT!l! number of specimens represent the well-known 
Spanish mines. A large iron flask, sealed with a leaden seal, 
n?7old” package in which mercury is ordinar- 
The following case contains ores of metals and metalloids 
minor importance. These include ores or bismuth, molybde- 
num, uranium, wolfram, chromium and certain rare elements as 
caesium, etc. 
, . 
‘ ANTIMONY AND ARSENIC. 
The third case from the entrance to Hall 63 contains anti- 
mony and arsenic. 
Specimens of stibnite, the common antimony ore, from vari- 
ous localities in Japan, California, New South Wales, United 
