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Typo: A Monthly Newspaper and Literary Review, Volume 4

Ink for Zinc Labels.—

Ink for Zinc Labels.—

The proper ink for writing on zinc is nitro-muriate of platinum, which produces a jet-black indelible stain. Procure an ounce stoppered phial, into which put half-an-ounce of nitro-muriatic acid, composed of two parts of muriatic to one of nitric acid; then procure a small piece of platinum, such as the whole touch-hole of a gun, which must be put in the acid and the stopper left out; set the phial in the sun, or upon hot sand, until the acid has assumed a deep brown tint. A few drops of this should now be added to a little water and tried with a quill pen, adding drop by drop until a sufficient blackness has been obtained. The writing must be well washed in water as soon as it has blackened, and then it should be wiped dry and varnished. Or, dissolve in half-a-pint of common writing-ink two pieces of sulphate of copper the size of a hazel-nut, and write on the zinc with a quill pen.