:57() The American Geologist. December, 1893 
EDITORIAL COMMENT. 
The Columbian Exposition. 
.1 hasty glance taken in August, is'.).:, <ii the ores of the noble 
in, (l of the useful metals in the Mines and Minimi Building. 
The .Mines and Milling building is, like all the buildings of 
the Chicago Exposition, well designed for the object in view, 
tastefully decorated and well situated. Its longer sides run 
approximately northwest and southeast, parallel with the 
Electricity building and between the Administration building 
and the lagoon. It is 700x800 feet in area, and has a wide 
gallery on the inside. 
The United States. 
Arizona. 
In the southeast corner is a space of about 40x60 feet de- 
voted to this state. 
A very striking mass of spike and feather silver in a brown 
earthy matrix ; a fine block of silver-gold ore, showing vein 
and gangue, from the Night Hawk mine; ores of lead, silver 
and gold from Gold Bend, Cougar Boss (horn silver) and 
State of Maine, with cerussite crystals and pseudomorphs ; 
gold and silver ores from the Jersey Lily, Dixie, Boach, Grey 
Eagle, Wren, Silver Belt, Pic Nic, Queen, Iron Bearing, Golden 
Star, Line Tree, Johnson, Little Jack, Anderson and Mocking 
Bird; gold ore from Blue Belt, Rustler, Myrtle, Storm (loud. 
Husted, Morning Star, Gold Leaf and La Venezia ; silver and 
copper from the Alice, Gold Leaf (gold, silver and copper, 
Hassayampe district), Snow Clad (lead and silver), Stagner. 
Mammoth (copper and cinnabar); large masses of gold ore 
from the Congress mine, Leadville (gold and silver), Bullard 
(gold, silver and copper). Silver Chord (gold, silver and lead), 
Turkey Creek District Union (gold), Big Bug district, Col. 
Caney (gold, silver and copper, Hassayampe district). Nancy 
Hanks (gold and silver, Blade Rock district), Homestake (gold 
and silver, Big Bug district). Wasp (gold and silver, Cherry 
(reek district); a show case containing specimens of beauty 
from various districts and large masses from Little Grace (gold. 
Big Bug district). Bellick (gold and silver, Martinez district ). 
the Reward Pinal Co., near Casa Grande (silver and copper). 
