36 Review of Dr. Jackson’s Final Report 
Beryls, Iolite, Garnets, Amethysis, Quartz crystals, (some of 
which latter contain acicular crystals of the red oxide of Tita- 
nium.) 
Of those serviceable in making paints may be mentioned— 
Red, Yellow and Brown Ochres, Manganese, Molybdena 
Ochre, Yellow Blende. 
Of metals, we have an account of seventeen, without including 
the bases of earthy and saline minerals. ‘They are: Jron found 
in great abundance, Zinc, of which some mines can be wrought, 
‘Copper in considerable quantities, Lead, Tin, Antimony, Silver 
in the antimony and lead ores, Gold in minute quantities, Mo- 
lydenum, Manganese, Chrome, Titanium, Cadmium, Cobalt, 
Arsenic, Tungsten and Uranium. Of all these ution sub- 
stances full accounts are given of their localities, means of obtain- 
ing, and uses to which they can be applied. 
Respecting limestone and its conversion into lime we have a 
detailed statement, which embraces an account of some of the 
most important beds, the manner and cost of working, description 
of kiln used, &c. &c. We have, too, the full analyses of ten 
varieties of the stone. 
Meiallurgy.—The pages on this branch of economical geology 
we would particularly notice, as being in our estimation the most 
important, in a practical point of view, that the report contains. 
They are filled with the most valuable information upon almost 
every point connected with the mining and working of the va- 
rious metals that are made subservient to the use of man, aud 
would be the means, could they be placed in the hands of those 
most interested, of saving to them thousands upon thousands of 
dollars yearly, that are sacrificed for the want of a little knowl- 
edge of the chemical principles that have so great an ahem 
in their operations. 
We know something of the ignorance often displayed in the 
working of the metals in this country, particularly in that of iron, 
and we know too that unfortunate results frequently happen 
therefrom, which a little knowledge of science might prevent. 
In the present state of the art of reducing metal from the ore, in 
some sections of the country, a single suggestion will sometimes 
accomplish wonders. We have known instances where a few 
words from one scientifically acquainted with the action of the 
earths upon the ore in a furnace, have led to a greatly increased 
