Knoxville journal. [volume] (Knoxville, Iowa) 1874-1986, 1875-05-06
MECHANICAL AND scIEsTrFlc.

AS an indication of the advancement
that science has made recently, it might
be stated that gentleman at one of the
city markets. the other day, saw half a
| bnshel of white turnips run through a
cider-mill, and half an hour thereafter
noticed the same article, bottled, on sale,
and labeled pure Grated Horseradishp'
-Bsssoa Globe
An emulsion of raw meat is advised
as nutritious form of diet for conva-
lescents. Eight ounces. of raw meat,
with two and half ounces each of sweet
and bitter almonds and white sugar, are
beaten together in a mortar until CON-
pletely Homogeneous, the almonds hsv.
ing first been blanched. The compound
may be beaten up with eggs or milk and
water in any consistency.
The real possibility and advantage
OF the varied and extending use of paper
pulp is illustrated in the manufacture of
such things rs water pals, which are
now made in large numbers of paper
pulp, as well as of wooden slaves. In
the old way of making pals the sepa-
rate parts or slaves are cut, one at time,
from the log of wood, and, in making
them, all the chips and smaller pieces are
OF manufacture is concerned In max
ing paper pail, however, the fibrous
material is wholly utilized, and il tae
original stock is wood, as in part il may
be, then that which would be wasted In
chips and in flag ends is entirely saved
Those who make paper tell us that thus
lar they have barely entered on some OF
their new lines of product. --Scrf6ner for
Nay.
Mechanical impurities in water are
removed only by filtration chemical i'm.
purities cannot be removed in this man.
ner. If lime is supposed to be present in
water, the best test is to mix with il
small quantity of oxalic acid in a small
vessel; lime, If present, will he revealed
In white precipitate. Carbonate OF
copper is best detected by the white
tincture of gals, which produces black
precipitate. III the penknife, dipped in
water, assumes yellowish coating.
copper is present. The best method Of
detecting the presence of vegetable anu
animal matter Is by dropping into it
small quantity OF sulphuric acid; the
water becomes black. To purify water,
add twenty drops of sulphuric acid to
gallon OF water. An ounce of powdered
alum in hogshead of putrid water will,
in the course of a few hours. precipitate
the deletericas matter and make it iii for
use.-Sctentifc american.
The following is a novel device re
Gently invented for transmitting power:
Upon the ceiling or In some convenient
place are hung two castiron discs, or
hemispheres, securely clamped together.
Between the two is an elastic diaphragm
having piston secured 10 the center
The piston passes through hole In the
lower disc and is geared to a crank or
short piece of shafting. From each disc
extends a common rubber tube. These
are united at any convenient distance
with small, air.tight cylinder with a
piston. On applying power the dia-
phragm is driven rapidly up and down
and the air above and below it is alter
nately compressed and rariied This
impulse passes, with little loss by fric-
ton, through the pipes, and the piston
in the cylinder is alternately sucked up
and driven down. AS there are two pipes
the movement is reciprocal, and the
piston moves with nearly the same
power, and at speed corresponding
with the movement of the diaphragm.
There Is no exhaust, no discharge, and
no new supply of air. Even leak does
no harm, except 10 waste the power, and
the cylinder will work in whatever posi-
ton ii is placed, so long as the pipes are
clear. This device has been used in cut
ting cloth in wholesale clsthipg house,
and II is said TO work satisfactorily
j" The Wortd's Work." Scrfbner for Nay.