Steel goods are rubbed over with a mixture of lime and oil, to preserve them from rusting. Mercurial ointment has been recommended for the same purpose. M. Payen recommends plunging the articles into a solution of common soda. Spots of rust arc removed by rubbing them with very fine emery and sweet oil; as a chemical means of removing them, the ammoniacal chloride of zinc may be found useful. See Zinc. To remove rust-spots from linen, oxalic acid or binoxalate of potash is commonly used. Runge recommends prussiate of potash. Dissolve a little in water, and just acidulate with sulphuric acid. The stained linen macerated in this water turns blue. Its whiteness is now restored by a solution of carbonate of potash.
2. Camphine 3 oz., essence of lemon 1 oz.; mix. Some direct them to be distilled together.
3. French. Camphine 8 oz., pure alcohol 1 oz., sulphuric ether 1 oz., essence of lemon 1 dr.
4. Spirit of wine a pint, white soap 3 oz., ox-gall 3 oz., essence of lemon 1/2 oz.
1. Blue. Shell-lac 2 parts, dammar resin,
2 parts, Bergundy pitch 1 part, Venice turpentine 1 part, artificial ultramarine 3 parts.
2. Light blue. As the last, with 1 part of dry sulphate of lead.
3. Dark Blue. Venice turpentine 3 oz., finest shell-lac 7 oz., clear amber or black resin 1 oz., Prussian blue 1 oz., carbonate of Magnesia 1 1/2 drs. The last two to be made into a stiff paste with oil of turpentine, and added to the melted shell-lac and Venice turpentine.
1. Venice turpentine 4 1/2 oz., shell-lac 9 oz., colophony 1/2 oz., lamp black mixed to a paste with oil of turpentine q. s.
2. Inferior. Venice turpentine 4 oz., shell-lac 8 oz.,
3 oz. of colophony, and sufficient lamp black mixed with oil of turpentine to colour it.
3. Shell-lac 8 oz., Venice turpentine 4 oz., lamp black 6 oz.
4. Common, for bottles. Resin 6 oz.; shell-lac 2 oz., Venice turpentine 2 oz., lamp black q. s.
1. Light Brown. Venice turpentine 4 oz., shell-lac 7 1/2 oz., brown earth (English umber?) 1/2 oz., cinnabar 1/2 oz., prepared chalk 1/2 oz., carbonate of magnesia moistened with oil of turpentine 1 1/2 drs.
2. Light Brown - Second quality. Venice turpentine 4 oz., shell-lac 7 oz., resin 3 oz., English umber 3 oz., cinnabar 1/4 oz., prepared chalk 1 oz., magnesia as the last.
3. Dark Brown. Venice turpentine 4 oz., fine shell-lac 7 1/2 oz., English umber 1 1/2 oz., magnesia as before.
4. Dark Brown - Second quality. Venice turpentine 4 oz., shell-lac 7 oz., colophony 3 oz., English umber 1 1/2 oz., magnesia as before.
Venice turpentine 2 oz., shell-lac 4 oz., colophony, 1 1/4 oz., King's yellow 1/2 oz., Prussian blue 1/4 oz., magnesia as for brown.