10. (Chaptal.) As No. 4 (nearly), adding sulphate of copper, 1⁄2 lb. Full coloured, but less durable and anticorrosive than the preceding.
11. (Desormeaux.) Galls, 1 lb.; logwood chips, 4 oz.; water, 6 quarts; boil 1 hour, strain 5 quarts, add of sulphate of iron (calcined to whiteness), 4 oz.; brown sugar, 3 oz.; gum, 6 oz.; acetate of copper, 1⁄4 oz.; agitate twice a day for a fortnight, then decant the clear, bottle, cork up for use. Writes a full black, and otherwise resembles No. 10.
12. (Elsner.) Galls (powdered), 42 oz.; gum Senegal (powdered), 15 oz.; distilled or rain water, 18 quarts; sulphate of iron (free from copper), 18 oz.; liquor of ammonia, 3 dr.; spirit of wine, 24 oz.; mix these ingredients in an open vessel, stirring frequently until the ink attains the desired blackness. This formula is said to give a deep black, neutral ink that does not corrode steel pens.
13. (Exchequer.) Galls (bruised), 40 lbs. (say 4 parts); gum, 10 lbs. (say one part); green sulphate of iron, 9 lbs. (say one part); soft water, 45 galls., (say 45 parts); macerate for 3 weeks, employing frequent agitation. “This ink will endure for centuries.”
14. (Guibourt.) Galls (in powder), 50 parts; hot water, 800 parts; digest 24 hours, strain, and add of green sulphate of iron and gum Arabic, of each 25 parts; when dissolved, add the following solution and mix well:—Sal ammoniac, 8 parts; gum, 2 parts; oil of lavender, 1 part; boiling water, 16 parts. Said to be indelible.
15. (Japan.) This is a black and glossy kind of ink, which may be prepared from either of the above receipts by calcining the copperas until white or yellow, or by sprinkling it (in powder) with a little nitric acid before adding it to the decoction (preferably the former), by which the ink is rendered of a full black as soon as made. The glossiness is given by using more gum. It flows less easily from the pen than other inks, and is less durable than ink that writes paler and afterwards turns black. It is unfitted for steel pens.
16. (Lewis.) Bruised galls, 3 lb.; gum and sulphate of iron, of each 1 lb.; vinegar, 1 gall.; water, 9 quarts; macerate with frequent agitation for 14 days. To produce 3 galls. Fine quality, but apt to act on steel pens.
17. (Prerogative Court.) Galls, 1 lb.; gum Arabic, 6 oz.; alum, 2 oz.; green vitriol, 7 oz.; kino, 3 oz.; logwood raspings, 4 oz.;
soft water, 1 gall.; macerate at last. Said to write well on parchment.
18. (Ribaucourt.) Galls, 1 lb.; logwood chips and sulphate of iron, of each 1⁄2 lb.; gum 6 oz.; sulphate of copper and sugar candy, of each, 1 oz.; boil the first two in soft water, 21⁄2 galls., to one half, then add the other ingredients. Full coloured, but somewhat corrosive, as No. 10.