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To Remove Stains And Blemishes From Prints

Paste a piece of paper to a very smooth clear table, that the boiling
water used in the operation may not require a colour which might
lessen its success. Spread out the print you wish to clean upon the
table, and sprinkle it with boiling water; taking care to moisten it
throughout by very carefully applying a very fine sponge. After you
have repeated this process five or six times, you will observe the
stains or spots extend themselves; but this is only a proof that the
dirt begins to be dissolved.

After this preparation, lay the print smoothly and carefully into a
copper or wooden vessel, larger than the size of the print. Then cover
it with a boiling ley of potash, taking care to keep it hot as long as
possible. After the whole is cooled, strain off the liquor, take out
the print with care, spread it on a stretched cord, and when half dry,
press it between leaves of white paper, to prevent wrinkles.

By this process, spots and stains of any kind will be effectually

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