scientific secrets-第4节
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vinegar； it will pay you。 If a few gallons of water if made boiling hot so
as to warm the whole of a gentle warmth； it will make faster than if used
cold。 This must be done in cool weather； and the room also should be kept
warm。 For families； small kegs will do； but for manufacturers large casks
are best。 Many make vinegar by just putting fluid into the barrels of
shavings； soaked as directed above； and do not let it run through； but let
it stand in the shavings till sour； but it does not work fast enough for
manufacturers。 It will do where only a small amount is needed； keeping the
same strength of fluid as for the other plan； which is best。 Two or three
years ago； this receipt was sold for from 50 to 150。 If vinegar is made
from whiskey； it will have a more beautiful color if 5 or 6 lbs。 of sugar
is put into each barrel； of course keeping the same proportions of water
as though only one kind was used。 The shavings will last the whole season。
31。 CUBA HONEY
Good brown sugar 11 lbs。； water 1 quart； old bee honey in the comb 2 lbs。；
cream tartar 50 grains； gum arabic 1 oz。； oil of peppermint 5 drops； oil
of rose 2 drops； mix and boil two or three minutes and remove from the
fire； have ready strained one quart of water； in which a table…spoonful of
pulverized slippery elm bark has stood sufficiently long to make it ropy
and thick life honey； mix this into the kettle with egg well beat up； skim
well in a few minutes； and when a little cool； add two pounds of nice
strained bees' honey； and then strain the whole； and you will have not
only an article which looks and tastes like honey； but which possesses all
its medicinal properties。 It has been shipped in large quantities under
the name of Cuba honey。 It will keep fresh and nice for any length of time
if properly covered。
32。 EXCELLENT HONEY
Take 5 lbs。 of good common sugar； two pounds of water； gradually bring to
a boil； skimming well； when cool； add 1 lb。 bees' honey； and 4 drops of
peppermint。 If you desire a better article use white sugar and 1/2 lb。
less water； and one half pound more honey。
33。 GUNPOWDER
Take pulverized saltpetre； moisten it； and subject it to the action of a
slow fire until completely dried and granulated； of this take 75 parts；
purified sugar 12 and a…half parts； moisten and grind together till
completely blended； which will require several hours； pulverize on heaters
till dried。
34。 EXCELLENT MATCHES
The ends of the tapers or wood should be very dry； and then dipped in hot
melted sulphur and laid aside to dry； then take 4 parts of glue； dissolve
it and while hot add one part of phosphorus； and stir in a few spoonsful
of fine whiting to bring to the proper thickness。 This preparation should
be kept hot by being suspended over a lamp； while dipping the wood or
tapers。 Colour the mixture by adding a little vermillion； lamp black or
prussian blue； be careful not to ignite the compound while dipping。
35。 FIRE AND WATER…PROOF CEMENT
To half a pint of milk add half a pint of vinegar to curdle it； then
separate the curd from the whey； and mix the whey with 4 or 5 eggs；
beating the whole well together； when it is well mixed； add a little
quick…lime through a sieve； until it has acquired the consistence of a
thick paste。 This is a prime article for cementing marble； in or out of
the weather。 It is excellent for broken vessels； &c。
36。FRENCH CHEMICAL SOAP
Take 5 lbs。 castile soap； cut fine； 1 pint alcohol； 1 pint soft water； 2
ounces aquafortis （if for black cloth 1/2 ounce of lampblack；） 2 ounces
saltpetre； 3 ounces potash； 1 ounce camphor； 4 ounces cinnamon in powder。
Fist dissolve the soap； potash； and saltpetre by boiling； then add all the
other articles； and continue to stir until it cools； then pour it into a
box； let it stand 24 hours； and cut it into cakes。 It is used for taking
grease； stains； and paints from cloth； wood； &c。 This receipt has
frequently sold for 10。
37。 BLACK INK WITHOUT SEDIMENT
This ink is not injured by frost … is a beautiful article； and only costs
5 cents。 per gallon； and is sold for from 1 to 3。
Take 1 lb。 logwood； 1 gallon soft water； simmer in an iron vessel for one
hour； then dissolve in a little hot water 24 grains bychromate of potash；
and 12 grains prussiate of potash； and stir into the liquid while over the
fire； then take it off and strain it through fine cloth。 This ink is a jet
black flows freely from the pen and will stand the test of oexylic acid。
38。 INDELIBLE INK
1 inch of the stick of the nitrate of silver dissolved in a little water；
and stirred into each gallon of the above； makes first rate indelible ink
for cloth。 Judge what indelible ink costs。
39。 INDELIBLE INK
Nitrate of silver 1 1/2 oz。； dissolved in liquor ammonia fortisine 5 1/2
oz。； orchil for colouring 3/4 oz。； gum mucilage 12 oz。； mix the two
latter； then mix them with the two former； and it is ready to use。
40。 WRITING FLUID OR BLACK COPYING INK
Take two gallons of rain water and put into it gum arabic 1/4 lb。； brown
sugar 1/4 lb。； clean copperas 1/4 lb。； powdered nut galls 3/4 lb。； mix and
shake occasionally for ten days and strain。 If needed sooner； let it stand
in an iron kettle until the strength is obtained。 This ink can be depended
on for deeds or records； which you may want someone to read hundreds of
years to come。 Oexylic acid 1/4 oz。； was formerly put in； but as it
destroys the steel pens； and does just as well without it … it is now
never used。
41。 BEST INK POWDER
This is formed of the dry ingredients for ink； powdered and mixed。 Take
powdered galls one pound； powdered green vitriol half a pound； powdered
gum 4 ounces； mix all together； put it up into 2 ounce packages； each of
which will make a pint if ink。
42。 BEST RED INK
Take of best carmine （nakarot） 2 grains； rain water 1/2 ounce； water of
ammonia 20 drops； add a little gum arabic； and it is in a few minutes
ready for use。
43。 YELLOW INK
Dissolve alum in saffron water to whatever shade of yellow you please。 It
makes a beautiful ink。
44。 BLUE INK
Take Prussian blue； and oexylic acid； in equal parts； powder finely； and
add soft water to bring it to a soft paste； and let it stand for a few
days； then add soft water to the desired shade of colour； add a little gum
arabic to prevent spreading。
45。 GOLDEN INK
Take some white gum arabic； reduce it to an impalpable powder in a brass
mortar； dissolve it in strong brandy； and add a little common water to
render it more liquid； provide some gold in a shell； which must be
detached in order to reduce it to a powder； when this is done moisten it
with the gum solution； and stir the whole with a small hair brush； or your
finger； then leave it for a night that the gold may be better dissolved。
If the composition becomes dry during the night； dilute it with more gum
water in which a little saffron has been infused； but take care that the
gold solution be sufficiently liquid to flow freely in a pen； when the
writing is dry polish it with a dry tooth。
46。 WHITE INK FOR WRITING ON BLACK PAPER
Having carefully washed some egg shells remove the internal skin and grind
them on a piece of porphyry； then put the powder in a small vessel of pure
water； and when it has settled at the bottom； draw off the water and dry
the powder in the sun。 This powder must be preserved in a bottle； when you
want to use it put a small quantity of gum ammoniac into distilled
vinegar； and leave it to dissolve during the night； next morning the
solution will appear exceedingly white； and if you then strain it through
a piece of linen cloth； and add to it the powder of egg shells in
sufficient quantity； you will obtain a very white ink。
47。 SECRET INK FOR YOUNG LADIES AND GENTS
Take a drachm of clean rain water； put into it； in a clean vial； 10 or 12
drops of pure； clean sulphuric acid； and it is ready for use； write with
this using a clean quill pen on letter paper； and when dry you can see no
mark at all； then hold it to a strong heat and the writing becomes as
black as jet。 If you want to write to a young lady or gentleman； as the
case may be； and fearing that the letter might be opened before she or he
gets it； write with common black ink something of no importance； then
between the lines write what you want to say with the secret ink。 The
person to whom you are writing must understand the scheme so that she or
he may hold it to the heat and thereby make the writing visible。
48。 CIDER WITHOUT APPLES
To each gallon of cold water put 1 lb。 common sugar； 1/2 ounce of tartaric
acid； one tablespoonful of yeast； shake well； make in an evening and it
will be fit for use next da
