This section is from the "Henley's Twentieth Century Formulas Recipes Processes" encyclopedia, by Norman W. Henley and others.
This is usually prepared by adding a little sugar to ordinary black ink, which for this purpose should be very rich in color, and preferably made galls prepared by heat. Writing executed with this ink may be copied within the space of 5 or 6 hours, by passing it through a copying press in contact with thin, unsized paper, slightly damped, enclosed between 2 sheets of thick oiled or waxed paper, when a reversed transcript will be obtained, which will read in proper order when the back of the copy is turned upwards. In the absence of a press a copy may be taken, when the ink is good and the writing very recent, by rolling the sheets, duly arranged on a ruler, over the surface of a flat, smooth table, employing as much force as possible, and avoiding any slipping or crumbling of the paper. Another method is to pass a warm flat-iron over the paper laid upon the writing. The following proportions are employed:
Sugar candy or lump sugar, 1 ounce; or molasses or moist sugar, 1.25 ounces; rich black ink, 1.5 pints; dissolve.
Malt wort, 1 pint; evaporate it to the consistence of a syrup, and then dissolve it in good black ink, 1.25 pints.
Solazza juice, 2 ounces; mild ale, 0.5 pint; dissolve, strain, and triturate with lampblack (previously heated to dull redness in a covered vessel), 0.25 ounce; when the mixture is complete, add of strong black, 1.5 pints; mix well, and in 2 or 3 hours decant the clear.
After making the above mixtures, they must be tried with a common steel pen, and if they do not flow freely, some more unprepared ink should be added until they are found to do so.
In 20 parts of fuming sulphuric acid dissolve 5 parts of indigo, and to the solution add 100 parts of extract of aqueous myrobalous and 10.5 parts iron filings or turning shavings. Finally add:
Gum arabic....... 1.5 parts
Sugar............ 7.5 parts
Sulphuric acid, 66°
B.............. 10.5 parts
Aniline blue....... 1.5 parts
Carbolic acid...... 0.5 parts
Mirobalan extract to make 1,000 parts. This ink when first used has a bluish tint, afterwards becoming black.
In 100 parts of aqueous extract of gall apples dissolve:
Iron sulphate........ 30 parts
Copper sulphate..... 0.5 parts
Sulphuric acid....... 2 parts
Sugar. ............. 8 parts
Wood vinegar, rectified.............. 50 parts
Indigo carmine...... 30 parts