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106 Simple Galvanic Battery
Into an ordinary glass tumbler
drop a few christals of Sulphate
of Copper, until the bottom is
just covered, and on this lay a
disk of thin sheet copper, having
a mettallic contact, with an insulated
copper wire, running up and over
cheap the Edge of the tumbler, and thus
forming the positive pole of the
battery. Sprinkle a few chrystals
Galvanic of the Sulphate of Copper on the
disk, until its surface is covered;
and about 1 inch above this, suspend
a disk of ordinary stove zinc, similar
Battery in size and shape to the copper disk
below it, and suspended by a strip
of zinc, running up and over the
Edge of the tumbler, this strip thus
forming the negative pole of the
battery. The zinc disk, with its
strip, can be cut at once from a
sheet, so as to save joining the
strip to the disk. Now pour in
clean, cold water, until the zinc
disk is covered. This is a small
gravity battery, and will give
a good and steady current in
about 2 hours time.
Dec 22, 1877 [Scientific American]
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Wilkie Collins died in London
Sept 23, 1889 aged 65 years.
Philip Ricord the Surgeon died in
Paris Oct 22 1889 aged 88 years.
RIGHT PAGE
107
To Make Vanilla Extract
I bet Take Vanilla Beans 1 oz [ounce]
averdupois, Refined Sugar 1 oz [ounce] averdup. [averdupois, i.e avoirdupois]
95 per cent alcohol 8 fluid ounces,
Water 8 Fluid ounces. Beat the
Beans to a coarse powder in a mortar,
with the Sugar, macerate them in the
mixed alcohol and water for a week
Vanilla shaking frequently, and finally
Extract strain the liquid through cotton
cloth, using pressure, and adding
enough diluted alcohol through
the strainer to bring the finished
product to the measure of 1 pint.
The sugar is merely added to aid
in dividing the vanilla. Febuary 3 1878
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Needles
A single machine in New Haven
make an entire needle, without any
manual labor. A coil of steel twine is
put in. The machine cuts if off at
the required length. It cuts the steel
pieces, punches the eye holes, and
Needles countersinks the eyes, grinds the
points, and so on, until the needle
drops out, all formed. Another
machine picks them up, and arranges
them heads & [and] points together, and a third
manchine puts them into papers. One
of these machines occupies no more
space than an ordinary table and
turns out from 20,000 to 40000 per
day. Dec 2 1891
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