按键盘上方向键 ← 或 → 可快速上下翻页，按键盘上的 Enter 键可回到本书目录页，按键盘上方向键 ↑ 可回到本页顶部！
————未阅读完？加入书签已便下次继续阅读！
of the best then in use。 The formula for its preparation
is as follows：
Aleppo galls； in coarse powder； 8 ounces。
Logwood chips； 4 〃
Sulphate of iron； 4 〃
Powdered gum…arabic； 3 〃
Sulphate of copper； 1 〃
Crystallized sugar； 1 〃
Boil the galls of logwood together in twelve pounds
of water for an hour； or till half the water has
been evaporated； strain the decoction through a
hair sieve； and add the other ingredients； stir till
the whole； especially the gum； be dissolved； and
then leave at rest for twenty…four hours； when the
ink is to be poured off into glass bottles and
carefully corked。
* * * * * * *
〃Mr。 J。 Horsley gives the following receipt：
Triturate in a mortar thirty…six grains of gallic
acid with three and one…half ounces of strong decoction
of logwood； put it into an eight ounce
bottle； together with one ounce of strong ammonia。
Next dissolve one ounce of sulphate of iron in
half an ounce of distilled water by the aid of heat；
mix the solutions together by a few minutes'
agitation； when a good ink will be formed； perfectly
clear； which will keep good any length of time
without depositing； thickening； or growing mouldy；
which latter quality is a great desideratum； as ink
undergoing that change becomes worthless。 It
will not do to mix with ordinary ink； nor must
greasy paper be used for writing on with it。〃
Chemical News （1862）。
* * * * * * *
〃New Indelible Marking Ink。Dr。 Elsner gives
the following as a stamping ink for goods before
undergoing bleaching； or treating with acids or
alkalis。 It consists merely of one ounce of fine
Chinese vermilion and one drachm of protosulphate
of iron； well triturated with boiled oil varnish。〃
* * * * * * * *
〃Put Aleppo galls； well bruised； 4 1/2 oz。 and
logwood chipped； 1 oz。 with 3 pints soft water； into
a stoneware mug： slowly boil； until one quart remains：
add； well powdered； the pure green crystals
of sulphate of iron； 2 1/2 oz。 blue vitriol or verdigris；
（I think the latter better） 1/2 oz。 gum arabic
2 oz。 and brown sugar； 2 oz。 Shake it occasionally
a week after making： then after standing a
day； decant and cork。 To prevent moulding add
a little brandy or alcohol。
〃The common copperas will not answer so well
as it has already absorbed oxygen。〃
* * * * * * *
〃Pour a gallon of boiling soft water on a pound
of powdered galls； previously put into a proper
vessel。 Stop the month of the vessel； and set it in
the sun in summer； or in winter where it may be
warmed by any fire； and let it stand two or three
days。 Then add half a pound of green vitriol
powdered； and having stirred the mixture well together
with a wooden spatula； let it stand again
for two or three days； repeating the stirring； when
add further to it 5 ounces of gum arabic dissolved
in a quart of boiling water； and lastly； 2 ounces of
alum； after which let the ink be strained through a
coarse linen cloth for use。
〃Another。 A good and durable ink may be
made by the following directions： To 2 pints of
water add 3 ounces of the dark coloured rough…
skinned Aleppo galls in gross powder； and of
rasped logwood； green vitriol； and gum arabic；
each； 1 oz。
〃This mixture is to be put into a convenient
vessel； and well shaken four or five time a day； for
ten or twelve days； at the end of which time it will
be fit for use； though it will improve by remaining
longer on the ingredients。 Vinegar instead of
water makes a deeper coloured ink； but its action
on pens soon spoils them。〃
* * * * * * * *
〃Beat up well together in an iron mortar the
following ingredients in a dry state； viz。 8 oz。 of
best blue gall…nuts； 4 oz。 of copperas； or sulphate
of iron； 2 oz。 of clear gum arabic； and 3 pints of
clear rain water。
〃When properly powdered； put to the above；
let the whole be shaken in a stone bottle three or
four times a day； for seven days； and at the end
of that time； pour the liquid off gently into another
stone bottle； which place in an airy situation
to prevent it from becoming foul or mothery。
When used put the liquid into the ink…stand as required。〃
Take 6 quarts （beer measure） of clear water；
soft or hard； and boil in it for about an hour 4 oz。
of the best Campeachy logwood； chipped very thin
across the grain； adding； from time to time； boiling
water to supply in part the loss by evaporation；
strain the liquor while hot； and suffer it to
cool。 If the liquor is then short of 5 quarts； make
it equal to this quantity by the addition of cold
water。 After which let 1 lb。 of bruised blue galls；
or 20 oz。 of the best common galls； be added。 Let
a paste be prepared by triturating 4 oz。 of sulphate
of iron （green vitriol） calcined to whiteness； and
let half an ounce of acetite of copper （verdigris）
be well incorporated together with the above decoction
into a mass； throwing in also 3 oz。 of coarse
brown sugar and 6 oz。 of gum Senegal； or Arabic。
Put the materials into a stone bottle of such a size
as to half fill it； let the mouth be left open； and
shake the bottle well； twice or thrice a day。 In
about a fortnight it may be filled； and kept in well…
stopped bottles for use。 It requires to be protected
from the frost； which would considerably
injure it。〃
Infuse a pound of pomegranate peels； broken
to a gross powder； for 24 hours in a gallon and a
half of water； and afterwards boil the mixture till
1…3d of the fluid be wasted。 Then add to it 1 lb。
of Roman vitriol； and 4 oz。 of gum arabic powdered；
and continue the boiling till the vitriol and
gum be dissolved； after which the ink must be
strained through a coarse linen cloth； when it will
be fit for use。
〃This ink is somewhat more expensive； and yet
not so good in hue as that made by the general
method； but the colour which it has is not liable to
vanish or fade in any length of time。〃
* * * * * * * *
〃Infuse a pound of galls powdered and 3 ounces
of pomegranate peels； in a gallon of soft water for
a week； in a gentle heat； and then strain off the
fluid through a coarse linen cloth。 Then add to it
8 oz。 of vitriol dissolved in a quart of water； and
let them remain for a day or two； preparing in the
meantime a decoction of logwood； by boiling a
pound of the chips in a gallon of water； till 1…3d
be wasted； and then straining the remaining fluid
while it is hot。 Mix the decoction and the solution
of galls and vitriol together； and add 5 oz。 of gum
arabic； and then evaporate the mixture over a common
fire to about 2 quarts； when the remainder
must be put into a vessel proper for that purpose；
and reduced to dryness； by hanging the vessel in
boiling water。 The mass left； after the fluid has
wholly ex