REVIEWS 763 
At this camp four companies have installed concentrators to treat the low- 
grade ores. 
The nickel ores yielded $2,271,616.00, but the product had a refined 
value of nearly four times that sum. Nearly all of this production was 
recovered by twocompanies. About a million dollars’ worth of copper was 
recovered as a by-product of the nickel ores, and the Superior and Bruce 
mines produced also a relatively small amout of this metal. 
WEL: 
Epitome of the Economic Geology of New Mexico. By FAYETTE A. 
Jones. Published by Direction of the New Mexico Bureau of 
-Immigration, Albuquerque, New Mexico, 1908. 
This well-arranged, neatly bound volume of 47 pages is sure to meet 
‘with the favor of prospectors and others interested in the mineral resources 
of New Mexico. The minerals and other products of present or prospec- 
tive economic importance include coal, copper, silver, gold, lead, zinc, 
iron, manganese, molybdenum, fluorite, alum, salt, gypsum, sulphur, mica, 
asbestos, meerschaum, turquoise, graphite, petroleum, natural gas, guano, 
marble, stone, clay, and mineral paint. A feature of the booklet is a cata- 
logue showing the distribution of various minerals. : 
W. H.E. 
