The most curious, perhaps, of the many invisible inks that are made is
that prepared from cobalt. Dissolve some zaffre in muriatic acid till the
acid extracts the metallic part of the cobalt, which gives to the zaffre its blue
colour. Then dilute the solution, which is very acrid, with common water,
w'hen it is fit for use. The writing may be made to appear and reappear
at pleasure by submitting it to heat ; as the paper cools the writing fades
away, but it may be made visible again by holding it to the fire. The
paper must not be over-heated, or the characters will become perma-
nent.
INK, To Prevent the Moulding of. — A little spirits of wine and oil
of cloves added to the ink before it is boiled, or a few cloves placed in a
bottle of cold ink will prevent it becoming mouldy.
INK SPOTS FROM BOARDS, to Remove. — An application of
strong muriatic acid or spirits of salt, afterwards scrubbing the part with
soap and water, will effectually remove ink stains from floors, &c.
INK SPOTS FROM COLOURED ARTICLES, To Remove.
— Soak the spots in a saucer of milk until they are very faint, then rub, and
rinse in cold water. This will generally remove ink from such articles as
would be ruined by the application of acids.
A teaspoonful of oxalic acid mixed with a teacup of hot water may be
rubbed upon such articles as possess fast colours.
INSECT POWDER. — Fresh green pennyroyal✪ INSECT POWDER, powdered and
sprinkled about, will be found effectual in keeping away moths, cock-
roaches Sc c.
INSECTS ON PLANTS, To Destroy. — Dredge the leaves and
young shoots with powdered sulphur ; or apply to the stems and branches
a thin mixture of oil of turpentine and soap.
INSECTS, To Destroy the Eggs of. — Put into about four gallons
of water half a pound of tobacco, half a pound of sulphur, and a quarter
of a peck of lime✪ INSECTS, To Destroy the Eggs of ; stir well together, leave to settle, and syringe the in-
fected trees or walls with the clear liquid. More water may be poured
upon the sediment when the first is all used.
INSECTS, To Extract the Stings of. — Press the barrel of a watch
kev over the sting, which will expose it, when it may readily be removed
with the fingers or a small pair of tweezers, and cover the part stung with
a piece of lint soaked in extract of lead.
INSECTS, To Prevent Attacks of. — A little turpentine rubbed on
the skin will effectually prevent attacks from insects.
INTEREST, To Calculate. — Multiply the pounds by the number
of days for which it is required to ascertain the interest ; this sum, divided
IOI
by 365 will give the interest in shillings at five per cent. The other rate*
of interest are easily calculated by adding to, or deducting from, the five per
cent, product. Thus, two-and-a-half per cent, would be just the half of
the product of the five per cent. ; three per cent, would be six-tenths ;
three-and-a-half per cent, seven-tenths, and four per cent, four-fifths ; while
six per cent, requires six-fifths to be added, six-and-a-quarter one-fourth,
seven-and-a-half one half, and so on.
IODINE LOTION.— Tincture of iodine, half a fluid ounce;
iodide of iron, twelve grains ; chloride of antimony, half an ounce. Mix,
and apply with a camel's hair brush. Used for corns and swellings in the
neck.
IODINE WASH. — Dissolve three grains of iodine in two table-
spoonfuls of spirits of wine, then add to it a pint of water✪ IODINE WASH. Used for
scrofulous sores.
Page 111 · 3 recipe records on this page
Presented as published in 1891. Historical recipes may not meet modern food-safety standards. Cook from the modern interpretation, not the original instructions.
AI-modernized reading of the original text
The most curious, perhaps, of the many invisible inks that are made is that prepared from cobalt. Dissolve some zaffre in muriatic acid till the acid extracts the metallic part of the cobalt, which gives to the zaffre its blue colour. Then dilute the solution, which is very acrid, with common water, when it is fit for use. The writing may be made to appear and reappear at pleasure by submitting it to heat ; as the paper cools the writing fades away, but it may be made visible again by holding it to the fire. The paper must not be over-heated, or the characters will become permanent.
INK, To Prevent the Moulding of. — A little spirits of wine and oil of cloves added to the ink before it is boiled, or a few cloves placed in a bottle of cold ink will prevent it becoming mouldy.
INK SPOTS FROM BOARDS, to Remove. — An application of strong muriatic acid or spirits of salt, afterwards scrubbing the part with soap and water, will effectually remove ink stains from floors, &c.
INK SPOTS FROM COLOURED ARTICLES, To Remove. — Soak the spots in a saucer of milk until they are very faint, then rub, and rinse in cold water. This will generally remove ink from such articles as would be ruined by the application of acids.
A teaspoonful of oxalic acid mixed with a teacup of hot water may be rubbed upon such articles as possess fast colours.
INSECT POWDER. — Fresh green pennyroyal, powdered and sprinkled about, will be found effectual in keeping away moths, cockroaches Sc c.
INSECTS ON PLANTS, To Destroy. — Dredge the leaves and young shoots with powdered sulphur ; or apply to the stems and branches a thin mixture of oil of turpentine and soap.
INSECTS, To Destroy the Eggs of. — Put into about four gallons of water half a pound of tobacco, half a pound of sulphur, and a quarter of a peck of lime ; stir well together, leave to settle, and syringe the infected trees or walls with the clear liquid. More water may be poured upon the sediment when the first is all used.
INSECTS, To Extract the Stings of. — Press the barrel of a watch kev over the sting, which will expose it, when it may readily be removed with the fingers or a small pair of tweezers, and cover the part stung with a piece of lint soaked in extract of lead.
INSECTS, To Prevent Attacks of. — A little turpentine rubbed on the skin will effectually prevent attacks from insects.
INTEREST, To Calculate. — Multiply the pounds by the number of days for which it is required to ascertain the interest ; this sum, divided
IOI
by 365 will give the interest in shillings at five per cent. The other rate* of interest are easily calculated by adding to, or deducting from, the five per cent, product. Thus, two-and-a-half per cent, would be just the half of the product of the five per cent. ; three per cent, would be six-tenths ; three-and-a-half per cent, seven-tenths, and four per cent, four-fifths ; while six per cent, requires six-fifths to be added, six-and-a-quarter one-fourth, seven-and-a-half one half, and so on.
IODINE LOTION.— Tincture of iodine, half a fluid ounce; iodide of iron, twelve grains ; chloride of antimony, half an ounce. Mix, and apply with a camel's hair brush. Used for corns and swellings in the neck.
IODINE WASH. — Dissolve three grains of iodine in two tablespoonfuls of spirits of wine, then add to it a pint of water. Used for scrofulous sores.
Records on this page
INSECT POWDERINSECTS, To Destroy the Eggs ofIODINE WASH