Once it took a long time for molasses to drain out of a hogshead of
damp sugar. Now it is put into a great tub, with holes in the side,
which is made to revolve rapidly, and the molasses flies out. In the
best laundries clothes are not wrung out, to the great damage of tender
fabrics, but are put into such a tub and whirled nearly dry. So fifty
yards of woolen cloth just out of the dye vat--who could wring it? It
is coiled in a tub called a wizard, and whirled.
Muddy water is put through a process called clarification. It is the
same, except that there are no holes in the vessel. The heavier
particles of dirt, that would settle in time, take the outside, leaving
perfectly clean water in the middle. A perpendicular perforated pipe,
with a faucet below, drains off all the clear water and leaves all the
mud. Milk is brought in from the milking and put into a separator;
whirl it, and the heavier milk takes the outside of the whirling mass,
and the lighter cream can be drawn off from the middle. It is far more
perfectly separated than by any skimming.
A rotary snowplow slices off two feet of a ten-foot drift at each
revolution, and by centrifugal force flings it out of the cutting with
a speed that a hundred navvies or dagos cannot equal.
ONE PLANT HELP
A thousand acres of land on Cape Cod were once blown away.
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