388 'I'll' American Geologist. December, isas 
group. From the Olive ('reel,- district, silver gray copper and 
pyrite from the Intrinsic. From the Fox district,' free gold 
from the Black Butte. From the Shasta district, free gold 
from the Red. White and Blue, and the Ked Oxide. 
To resume. Oregon occupies ;i position almost alone among 
the metal-producing States. Four hundred and twenty quartz 
gold mines, twenty-five silver mines, six copper mines, 
nine magnetic and hematite iron mines, and one nickel mine 
(of which the product is not yet utilized) contribute to the 
mineral exhibit of this state. The Virtue mine, near Baker 
City, has already produced two millions of gold, the assay 
value of part of its output reaching as high as $10. (too per 
ton. 
From IS7(>, or the date of the Centennial Exposition at 
Philadelphia, to the end of 1892, the date of the Qundricen- 
tennial Exposition of Chicago, Oregon has produced $16,- 
200,000 in gold, and about $1,000,000 in silver. 
Charcoal iron of the best quality is manufactured from 
brown hematite at Oswego. The nickel ore is a garnierite 
found near Kiddle Station. Douglas county. 
Pennsylvania. 
The exhibit from Pennsylvania is very striking to the non- 
professional eye and the parts are tastefully arranged, but 
there is a notable lack of the systematic, lithological and min- 
eralogical collections which one has a right to demand from a 
State which has had two geological surveys lasting over 
twenty years. It has an instructive series of exhibits of iron 
furnace charges and products. 
Iron. Cases of the iron ores of York county and other lo- 
calities are noticeable, but they are not arranged in a way to 
give the observer any idea of their relative importance or 
their differences of constitution. Many ores from well-known 
localities are not represented at all. 
Zinc. Ores and products from the zinc works and slabs of 
zinc from the Lehigh Zinc company are shown. 
Nickel, Millerite from the Gap mine in Lancaster county. 
Manganese ore, locality not noted 
Besides these there are exhibits in coal, of which a splendid 
column of anthracite fifty feet in hight dominates the entire 
State collection, and in building stones. 
