Manufacturer and builder 9, 1870
To restore the original appearance of white flannel which has turned yellowish by lying for a long time or by wear, soak for an hour in a weak solution of bisulphite of soda, then add a little dilute muriatic acid, stir well and cover the vessel for twenty minutes. After this, take the flannel out, rinse in plenty of soft water, and dry in the sun. The flannel will be purely white.
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