. Mining and Scientific Press . een a tendency toward ind it would appear that ier will go mto effect, being a reduction from a maximum of $22 p>-r ton. but still soPi. •? than tic- pre war rate. The railroads are in a very difficult position: their business has 1 n ? ting erpi u- s are far higher thanthey were formerly: eight rates can be reduced, • r the public will have to pay a sufficient price forcopper to absorb the increased freight, which it docs netshow any inclination now to do, or the mines must con-tinue hi * • V now are, or a new outlet to tidewatermust be provided. 474 MINING
. Mining and Scientific Press . een a tendency toward ind it would appear that ier will go mto effect, being a reduction from a maximum of $22 p>-r ton. but still soPi. •? than tic- pre war rate. The railroads are in a very difficult position: their business has 1 n ? ting erpi u- s are far higher thanthey were formerly: eight rates can be reduced, • r the public will have to pay a sufficient price forcopper to absorb the increased freight, which it docs netshow any inclination now to do, or the mines must con-tinue hi * • V now are, or a new outlet to tidewatermust be provided. 474 MINING AND SCIENTIFIC PR! -> October 1. 1:»_1 Ancient South American Milling and Amalgamating Practice •The trapiche, or mill. for grinding gold and silveriple and rude piece of mechanism; its mov-ing power is constructed after the same fashion as themills used throughout Chile, and in some parts of Spainand Pram • . For grinding corn. A place is chosen wherea small current of water, whose section will present a sur-. LEFT: TRAPICHE ISED IN CHILE FOR GRINDING ORESRIGHT: FLOUR-MILL face of six inches in diameter, can be brought to a spotwhere it can fall perpendicularly ten or twelve feet. Atthis place a well is built of this depth and about six feetin diameter; in its centre is fixed an upright shaft uponntral brass pin; it is confined above by a woodencollar. A little above its foot, the shaft has affixed to ita small wheel, around which are fixed a number of radiat-ing Bpokes that are shaped at the ends somewhat likehollowed cups; these form a horizontal wheel about fourmeter. Upon the periphery of the cups, tin- jel• • is mad. to impinge with all the force it hasred in falling down an inclined and nearly per-trough, formed by scooping out the solidtrunk of The application of this force causes th< Ive with a quick rotatory motion. The arm • above the top of I he well: at about • ?! a small horizontal arm. four Eeel • an axh to a ponderous rom four to six f
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